(v 1.0)

Safety and usage cautions
Before installing our products, we recommend you to consult the section about safety and usage cautions at the link below

For each described situation, it is necessary to comply with the applicable laws and regulations. This device is a low-power radio transceiver. When in operation, it transmits and receives radio frequency (RF) energy.
The device generates magnetic fields; therefore, it must be kept away from magnetic media such as floppy disks, tapes, etc. Operation near electrical and electronic equipment such as radios, telephones, televisions, and computers may cause interference.
PRECAUTIONS
To ensure safety, operator well-being, and proper device operation, the system (including cables) must be installed in a location free from or distant from:
• Dust, moisture, high heat, and direct exposure to sunlight.
• Objects emitting heat, which could damage the enclosure or cause other issues.
• Objects generating strong electromagnetic fields (e.g., Hi-Fi speakers).
• Liquids or corrosive chemicals.
ENVIRONMENTAL CONDITIONS
Operating temperature: -10°C to +50°C
Relative humidity: 20% to 80% (non-condensing)
Note: For the battery, the recommended temperature range is 0°C to +45°C. Outside this range, the device will continue to operate, but the battery will not charge.
Avoid rapid changes in temperature and humidity.
DEVICE CLEANING
Use a soft, dry cloth only. Do not use solvents.
VIBRATIONS OR SHOCKS
Avoid causing vibrations or shocks to the device.
INTERFERENCE
This device, like all wireless devices, is subject to interference that may affect its performance.
USE IN HOSPITALS
Turn off the device near medical equipment; interference may occur with pacemakers and hearing assistive devices.
Exercise caution when using the device in hospitals and healthcare facilities, as sensitive equipment may be affected by external RF signals.
In areas where indicated, the device must remain turned off.
USE NEAR EXPLOSIVE MATERIALS
Do not use the device in fuel storage areas, chemical plants, or locations with explosive gases or ongoing blasting operations.
All restrictions and applicable regulations must be strictly followed.
USAGE INSTRUCTIONS
Do not use the device in direct contact with the human body; maintain a minimum distance of 20 cm from the device and antenna.
Use only approved accessories. Consult manuals of any devices connected to this equipment. Do not connect incompatible devices.
System overview

The system includes a gateway equipped to initiate emergency calls over both 4G (VoLTE) and GSM 2G networks using a SIM card. The device integrates a backup battery that ensures the autonomy required by the EN 81-28 standard.
To enable intercommunication between the various voice modules, the gateway generates two digital BUS two-wire (2Wire) that carry power, audio signals, and data. This results in simplified wiring, reducing the number of wires compared to the use of travelling cables that typically carry multiple wires, and easing installation.
The 2 Wire BUS allows communication between system devices in the following modes:
- Bidirectional telephone communication between trapped passengers (car, car roof, pit) and the rescue center (ref. EN 81-28).
- Bidirectional intercom communication between the car and the machine room (ref. EN 81-20).
- Bidirectional intercom communication between the fireman’s floor, protected floors, and the car (ref. EN 81-72 / DM 236 / EN 81-76).
- Bidirectional intercom communication between the evacuation floor, protected floors, and the car (ref. DM 236 / EN 81-76).
Emergency telephone and intercom
- 2G–4G–VoLTE communication for external emergency calls
- 4 programmable outputs via app
- 2 opto-isolated inputs 12/12 V (IN1: Alarm filter function, IN2: Alarm filter disable)
- 2 × 2-wire audio bus for connection of voice modules; to the car via flexible travelling cable and in the shaft via drop cable
Connectivity
- Wi-Fi for controller connection
- Ethernet for controller or multimedia display connection
- 4G for remote connection via SIM card (shared with telephony)
Available product configurations
| Configurations | Amigo 4.0 Full configuration | Amigo 2W Intercom only (coming soon) |
|---|---|---|
| Intended use | Internet + Emergency phone + Intercom | Intercom |
| Connectivity | Router 4G VoLTE LTE / GSM | No |
| Emergency phone | Yes | No |
| Micro-SIM connector | Yes | No |
| WiFi | Yes (for internet connection) | No |
| Ethernet | Yes | No |
| Intercom (2-wire BUS) | Yes | Yes |
| FXS output | No | No |
| Configuration method | FUSION App (local) FUSION dashboard (remote) | Not required |
| Reference Standards | EN81-20 EN81-72 EN81-76 EN81-28 | EN81-20 EN81-72 EN81-76 |
Generic schematic diagram

A) Telephone dialer / Router in the Machine Room
B) Voice module in the Cabin (ID=1)
C) Passive audio devices above and below the cabin
D) Voice module in the Machine Room (ID=2)
E) Voice module in the Shaft bottom (ID=3)
F) Voice module at the firefighter’s floor (ID=4)
G) Voice module at any floor (ID=5/6/..)
System components
Main device (Telephone Dialer / Router)

A) – Power supply input (via removable screw terminals)
B) – Power supply input (Jack DC connector)
C) – Not used
D) – 6 I/O terminal pairs, divided as follows:
- 4 programmable outputs for stand-alone configuration.
- 2 opto-isolated inputs (IN_1 – Alarm filter function / IN_2 – Alarm filter disable); a 12/24V DC supply is required for activation.
E) – 2 AUDIO BUS outputs for connecting the cabin voice module (via travelling cable) and the landing voice modules (via shaft drop cable)
F) – 8 diagnostic LEDs
G) – Not used
H) – 2 inputs for 4G mobile antenna (3m cable)
I) – Wi-Fi antenna (multimedia)
L) – SIM card for 4G connection
M) – LAN
N) – FXS out (for future use)
Active Voice module

A) – 4 preset inputs (see table below)
B) – BUS termination dip-switch – must be enabled on the last voice module in the drop line (both cabin and landing modules)
C) – Audio BUS input and output for daisy-chaining up to 15 voice module
D) – 3 preset opto-isolated outputs (see table below). The outputs are not powered by the audio BUS line.
E) – Inductive loop
F) – 6-pin JST connector for connecting passive voice modules above and below the cabin.
G) – Selector of the voice module (ID). Each voice module (maximum 15) must be assigned a unique ID address (see table below).
H) – Not used
| ID | Location of the voice module | Input function (A) | Output function (D) |
|---|---|---|---|
| 1 | Cabin | IN1 = Alarm call IN2 = Intercom IN3 = Alarm filter (see information below) IN4 = Local alarm reset | OUT1 = Alarm sent signal OUT2 = Alarm received signal OUT3 = Intercom communication active signal |
| 2 | Machine room | IN1 = Test call IN2 = Intercom IN3 = Not used IN4 = Local alarm reset | OUT1 = Not used OUT2 = Not used OUT3 = Intercom communication active signal |
| 3 | Pit | IN1 = Alarm call IN2 = Intercom IN3 = Alarm filter (see information below) IN4 = Local alarm reset | OUT1 = Alarm sent signal OUT2 = Alarm received signal OUT3 = Intercom communication active signal |
| 4 | Firefighters floor | IN1 = Not used IN2 = Firefighters intercom activation IN3 = Not used IN4 = Not used | OUT1 = Not used OUT2 = Not used OUT3 = Firefighters’ Key Switch Active |
| 5-9 A-F | Floor | IN1 = Not used IN2 = Push-to-talk intercom (PTT) IN3 = Not used IN4 = Not used | OUT1 = Not used OUT2 = Not used OUT3 = Intercom communication active signal |
Passive Voice module

A) – 2-poles screw terminal block for connecting the push-button alarm
B) – 4-pin JST connector for connecting the push-button alarm
C) – 6-pin JST connector for connecting active voice module in the cabin
D) – Not used
Installation of the telephone dialer
Fixing with screws

DIN rail fixing

Wirings
Connecting the main device to the voice modules
From the main device, two 2-wire audio BUS lines (BUS1 and BUS2) are connected: one to the voice module in the cabin (2) and the other to the voice modules at floors (1) down to the pit bottom, depending on the system configuration.

1) Voice modules at floors
2) Voice module in the cabin
Set the ID selector on the cabin module to 1 and Set the two BUS termination DIP switches to ON, as the cabin module is the end of the line.

The cable used for connecting voice modules through the 2-wire BUS requires the following specifications:
| Shielding | Aluminum or braided copper |
| Poles and internal copper section | 2 X 0,75 mm² |
| Cable twisting | 40 mm |
| Maximum operating voltage | 300 V |
| Outer sheath diameter | 5,5 mm ± 0,5 mm |
Connection of the voice module in the cabin (ID 1)

A)
BUS IN 2 wire – from the main device
B)
IN_1 – Alarm call
IN_2 – Intercom (optional)
IN_3 – Alarm filter
IN_4 – Local alarm reset
C)
OUT_1 – Alarm sent signal
OUT_2 – Alarm received signal
OUT_3 – Intercom communication active signal (optional)
D) 6-pin JST connector for connecting passive audio devices above and below the cabin.
E) The polarity of the cabin alarm button input can be set using the parameter:
Parameters menu > Audio terminal > Code T3 (IN1)
Connection of the voice module in the Machine room (ID 2)

A)
BUS IN 2 wire – from the main device
BUS OUT 2 wire – to the next voice module
B)
IN_1 – Alarm call (optional)
IN_2 – Intercom
C)
OUT_3 – Intercom communication active signal (optional)
Connection of the voice module in the shaft bottom (ID 3)

A)
BUS IN 2 wire – from the previous voice module
BUS OUT 2 wire – to the next voice module
B)
IN_1 – Alarm call
IN_2 – Push-to-talk intercom (optional)
C)
OUT_3 – Intercom communication active signal (optional)
Connection of the voice module at the firefighters floor (ID 4)

A)
BUS IN 2 wire – from the previous voice module
BUS OUT 2 wire – to the next voice module
B)
IN_2 – Input for Firefighters’ Intercom Activation
C)
OUT_3 – Firefighters’ Key Switch Active
Connection of the voice module at floors (ID 5-9 / A-F)

A)
BUS IN 2 wire – from the previous voice module
BUS OUT 2 wire – to the next voice module
B)
IN_2 – Push-to-talk intercom
Connection of the passive voice module

A) Voice module in the cabin
Connecting AMIGO emergency telephone to the Pitagora 4.0 system
The voice module installed beneath the car can replace the module located in the shaft bottom.Connection details
If the connection was not performed at the factory, connect the Pitagora 4.0 controller to the Amigo router/telephone via an Ethernet cable.




Overview of Device Diagnostic LEDs
Diagnostic LEDs on Telephone dialer / Router
The device features 8 diagnostic LEDs that provide real-time feedback on its operational status.
The LED status is also displayed in the Fusion app.

Led DL1 – Device operation status
| LED colour | Status | |
|---|---|---|
| Green | Device status OK | |
| Orange | Device status warning | |
| Red | Device status fail |
Led DL2 – Data transmission
| LED colour | Status | |
|---|---|---|
| Orange | LED flashes if a data transmission is in progress |
Led DL3 – Power and battery status
| LED colour | Status | |
|---|---|---|
| Green | Power and battery status OK | |
| Orange | Power status OK and Battery status warning | |
| Red | Power status OK and Battery status fail | |
| Blue / Green | No power and Battery status OK | |
| Blue / Orange | No power and Battery status warning | |
| Blue / Red | No power and Battery status fail | |
| Off | No power and no battery |
Led DL4 – Network type (colour)
| LED colour | Status | |
|---|---|---|
| Green | 4G Network + VoLTE | |
| Orange | 4G Network (no VoLTE) | |
| Red | 2G / 3G network | |
| Off | No network signal |
Led DL5 – Data roaming enabled / disabled
| LED colour | Status | |
|---|---|---|
| Green | Roaming enabled | |
| Red | Roaming disabled |
Led DL6 – FXS output status and line status (in case of ring, the corresponding LED flashes)
| LED colour | Status | |
|---|---|---|
| Green | FXS output enabled | |
| Red | FXS output disabled | |
| White | Line in outgoing communication | |
| Cyan | Line in incoming communication |
Led DL7 – BUS2W status and communication status (in case of ring, the corresponding LED flashes)
| LED colour | Status | |
|---|---|---|
| Green | BUS output 2W active | |
| Red | BUS output 2W fail | |
| Orange | BUS output 2W warning | |
| Purple | Ongoing intercom communication | |
| White | Bus active and Line in outgoing communication | |
| Cyan | Bus active and Line in incoming communication |
Led DL8 – Connection type enabled (in case of active communication at the same time flashing LEDs alternately)
| LED colour | Status | |
|---|---|---|
| White | WiFi active | |
| Red | BLE active | |
| Green | Ethernet active |
Diagnostic LEDs on Active Voice module

Yellow LED
Alarm sent
Green LED
Communication established
Red LED
Low battery
Programming via the FUSION app
FUSION is DMG’s app for programming, monitoring, and controlling its devices, both locally and remotely.
With the FUSION app, you can configure the AMIGO 4.0 device using a user-friendly wizard that guides you through the setup of both the router and telephony sections.
FUSION app general layout

A)
• Mobile network operator name
• Wi-Fi signal
• VoLTE (Voice over LTE), if available
• Network type
• Network signal level
B)
• Status of router LEDs
C)
• Device serial number
• Firmware version
D)
• Battery information
• Power supply status
• Perform a battery test
E)
Call status indicated by LEDs, showing which alarm/service call is currently active.
When a call is initiated, the “Alarm Call Sent” LED turns orange, and when someone answers the call, the “Alarm Call Received” LED turns green.
By clicking “Start test”, a test call is executed, selected from the available call types.
Initial setup wizard
The setup wizard appears only at first startup.
After configuration, the device goes directly to the Home Page.
To reopen the wizard, a parameter reset is required.
1) Voice and data SIM insertion
2) Battery connection
The first two steps are performed offline and show how to insert the SIM card and connect the battery.
3) Turning on the device
After powering on the device, check LEDs DL1 and DL3 to verify that the device is ready for use.
4) Connect to the local WiFi network
Connect to the DMG_AMIGO_ network. Once connected, the LEDs and all other information will start being detected, whereas previously they were unavailable.
The wizard setup cannot continue until the Wi-Fi connection is established.
If a SIM with a PIN is inserted, network information (operator and signal) will only be visible after the PIN is entered.
5) Insert SIM PIN code
If the SIM PIN is locked, you will be prompted to enter it.
Once the SIM PIN is entered, the device automatically disables it, and the SIM will be unlocked without a PIN.
If the PIN is already unlocked, you can continue without entering it.
Other possible states include: SIM not inserted, incorrect PIN, or PUK code requested.
6) Wait for the device to register on the network
7) Data SIM roaming deactivation
In the following steps, you can disable the PIN request or enable/disable roaming.
Disabling the PIN can be useful to avoid entering it every time the device is used.
Roaming, usually disabled, should be enabled when using the device abroad; otherwise, calls might not be received.
8) APN configuration
9) Check internet connection
APN configuration is essential. It can be set automatically, but if the connection doesn’t work, it can be manually changed.
If the APN is incorrect, the device will not connect to the Internet and only voice calls will be available. To verify that the APN is correct and the device is connected to the Internet, check that LED DL2 is lit.
10) Emergency call numbers
11) Numbers for service / self-diagnosis calls
In these steps, phone numbers for calls must be entered.
In the “Emergency call numbers” section, you can add up to 6 emergency numbers, with at least the first one being mandatory. During an alarm call cycle, the numbers will be dialed in sequence.
In the “Numbers for service / self-diagnosis calls” section, you can enter up to 3 numbers for automatic service calls. These calls are triggered automatically in case of issues such as low battery, power failure, periodic test 81-28, and similar.
12) Verify alarm calls
13) Verify service call / self-diagnosis
In these steps, test calls can be made to verify the correct operation and configuration of the system.
Clicking on Test Call Alarm will call the emergency numbers set for alarm calls, while clicking on Test Call Service will start the test of service calls to the configured numbers.
These tests are optional and at the installer’s discretion.
Configuration completed
At the end of all steps, clicking Finish Configuration will complete the procedure and redirect you to the main page, where several important details about the device are displayed.
Parameters menu
General parameters
| Code | Decription |
|---|---|
| G1.1 | Gateway output configuration – OUT 1 Configuration of OUTPUT 1 relay on the device with the following options: 0 – Disabled 1 – Same behavior Alarm Sent 2 – Same behavior Alarm Received 3 – Active in the absence of external power supply 4 – Active for the duration of the alarm call 5 – Active while pressing alarm buttons 6 – Active when there is no telephone line signal 7 – Active when the battery is discharged 8 – Remote Activation |
| G1.2 | Gateway output configuration – OUT 2 Description and option selection as in section G1.1 |
| G1.3 | Gateway output configuration – OUT 3 Description and option selection as in section G1.1 |
| G1.4 | Gateway output configuration – OUT 4 Description and option selection as in section G1.1 |
| G2 | Remote battery disconnect Parameter G2 allows remote battery disconnection for complete device shutdown. The Amigo 3 device is equipped with a battery power on/off control circuit. |
| G3.1 | Notification Call Filter – External Power Failure Alarm Calling Procedure Allows enabling or disabling the notification call in case of external power loss. |
| G3.2 | Notification Call Filter – Procedure Calling Alarm Connection Handsfree 2W Allows enabling or disabling the notification call for audio terminal disconnection. |
| G3.3 | Notification Call Filter – Calling Procedure External Power Failure Alarm Allows enabling or disabling the notification in case of external power loss. |
| G4 | Restart device Parameter for restarting the device. |
| G5 | Restore factory settings Parameter to reset the device to factory defaults. |
| G6 | Search and install updates Parameter for searching and installing firmware updates. |
Router parameters
| Code | Decription |
|---|---|
| R1 | Data SIM Roaming Enable Data roaming on the SIM can be enabled or disabled. |
| R2 | APN Configuration APN configuration with automatic selection via internal database or manual input. |
Dialer parameters
| Code | Decription |
|---|---|
| C1 | Registration of a unique identification number (provided by the call center to the sent in case of alarm). – IMSI – ICC ID Sim – MAC – Editable field |
| C2 | Recording the phone numbers you want to call during the alarm cycle (currently 6 numbers). |
| C3 | Recording service call number for service messages (automatic calls e.g. low battery, power failure alarm). |
| C4 | Setting the Communication Protocol. – None – P100 |
| C5 | Setting the maximum number (1÷9) of alarm cycle attempts before the system returns to stand-by mode. |
| C6 | Setting the time (0÷3 seconds) for pressing the alarm button of one of the devices before the dialer starts the alarm cycle. |
| C7 | Setting the Manual Test Time of the Alarm Button. |
| C8 | Set the interval of the periodic test call (EN_81-28). |
| C9 | Setting the Maximum Duration of Two-way Talk Time (3-15min) |
| C10 | Call Center Response Waiting Time (10…90sec) |
| C11 | Multiline Configuration. – 1 Amigo > 1 Car (Simplex) – 1 Amigo > 2 Cars (Multiplex) |
| C12 | Reset all alarms |
Audio Messages
| Code | Decription |
|---|---|
| M1 | Control Playback Pre-Recorded Audio Messages Plays the preloaded audio messages. |
| M2 | Choice of Primary Message Language Primary audio-message playback language selection. |
| M3 | Choice of Secondary Message Language Secondary audio-message playback language selection. |
Audio Terminal
| Code | Decription |
|---|---|
| T1 | Number of Terminal Present on Bus Shows the number of voice modules connected to the bus. |
| T2 | Terminal IDs and Volume configuration Shows the IDs of the connected voice modules and the volume (0–3) for each module. |
| T3 | Polarity of Audio Terminal Inputs Setting the polarity of the voice modules’ inputs. |
| T4 | Not used |
Alarm Cycle description

The passenger trapped in the lift holds down the alarm button for a preset, adjustable time.
Parameters menu > Dialer > Code C6

When the alarm is generated, the yellow “alarm sent” indicator lights up on the voice module and the preset courtesy message is played.
Parameters menu > Audio Messages > Code M1/M2

The AMIGO emergency phone dials the first stored number.
Parameters menu > Dialer parameters > Code C2
If the communication protocol is set to P100 and the call center is enabled for DTMF tone communication, the lift identification sequence is transmitted as DTMF tones.
Parameters menu > Dialer parameters > Code C4

The call must be accepted within a user-programmable time interval (Response Waiting Time)
Parameters menu > Dialer parameters > Code C10
otherwise the AMIGO emergency phone dials the second stored number (see the previous section).

Once the call is accepted, a two-way conversation is automatically established for a user-programmable duration (Two-way Talk Time).
Parameters menu > Dialer parameters > Code C9
The green “communication established” indicator lights up on the voice module.

Once the call is hung up,
the “Alarm Sent” indicator remains lit,
while the “Communication Established” indicator turns off (according to EN81-28 requirements).
To turn off the “Alarm Sent” (yellow) indicator, the alarm must be reset, which can be performed in one of the following ways:
Remotely – Fusion APP

Parameters menu > Dialer parameters > Code C12
Remotely – Phone DTMF tones

by calling the device back and sending the DTMF (*) tone.
Locally – IN4 contact

through the IN_4 contact on the voice module. In this case, a call to the rescue center is triggered, notifying them that the alarm has been reset locally (end-of-alarm call).
Automatic test calls
Automatic Periodic Test Calling 8128 (EN81-28)
The Alarm System automatically signals proper operation by periodically connecting to the Rescue Service, typically every 72 hours (3 days).
Parameters menu > Dialer parameters > Code C8

The AMIGO emergency phone dials the first three stored numbers.
Parameters menu > Dialer parameters > Code C2
The call can be made in voice or data mode, depending on whether a protocol is configured.
Parameters menu > Dialer parameters > Code C4

For a call to be successful, the dialer expects the DTMF “8” tone.

If the automatic call fails, the “alarm sent” and “communication established” indicators will flash at one-second intervals. They will turn off after a successful automatic call.
Low Battery Alarm Calling (EN81-28)
The Alarm System automatically reports upcoming battery depletion.
The call is triggered automatically when the voltage drops below 3.7V (value to be defined) and is repeated every 30 minutes, up to a maximum of 3 times.
The call can be made in voice or data mode, depending on whether a protocol is configured.
End of Alarm Call Test (EN81-28)
After a manual alarm reset, the system automatically sends a call to the registered emergency number, indicating that the alarm has been reset locally.
The call can be made in voice or data mode, depending on the configured protocol.
External Power Failure Alarm Calling
f external power is lost, the system automatically sends a service call to the registered number, reporting the power failure on the device.
The call can be made in voice or data mode, depending on the configured protocol.
Calling Alarm Connection Handsfree 2W
If any voice module connected to the 2-wire Bus is disconnected, the system automatically sends a service call to the registered number, indicating the disconnection.
The call can be made in voice or data mode, depending on the configured protocol.
SIM Expiration Alarm Calling
In case of an expired SIM card, the system automatically sends a notification call to the number registered for service calls, indicating the SIM card expiry.
The call can be made in voice mode or data mode, depending on the protocol settings.
Datasheet
| Telephone dialer / router | |
|---|---|
| Voltage | 12–24 Vdc for up to 6 voice modules 24 Vdc for more than 6 voice modules |
| Max absorption | 20 W |
| Backup battery | Litium Battery 3.7V 4.3Ah |
| Backup battery autonomy | 120 minutes in stand-by, including up to 25 minutes of conversation. Note: The 120-minute autonomy is calculated considering a maximum configuration of 6 active modules + 2 passive modules. For configurations with a higher number of modules, an external backup power supply is required. |
| Digital BUS | 2 |
| Total power supplied by the two BUS | 16W |
| Operating temperature | -5°c ~ +50°c |
| MOBILE | |
| Band | LTE, UMTS/HSPA(+) and GSM/GPRS/EDGE |
| LTE category | Cat1 (Voce) Cat4 (Multimedia) |
| WIRELESS LAN | |
| Bands | 2.4G |
| Mode | IEEE 802.11b/g/n, Access Point (AP) |
| AP (Max. Access Points) | 16 |
| Security Encryption Mode | WEP/ TKIP/ AES/ WPA-PSK/ WPA2-PSK |
| Data Rates | 802.11b 11 Mbps 802.11g 54 Mbps 802.11n 150 Mbps |
| Voice module | |
|---|---|
| Voltage | 12/24V DC |
| Max absorption | 50 mA (12V) 25 mA (24V) |
Download
| Reference | Version | Link |
|---|---|---|
| 1.0 | Download PDF (English) |
