A Duress Pendant is used in conjunction with a programmed receiver to set a Digital input which in turn creates an alert to notify of a duress instance. This can be used in solutions such as Remote worker & Lone worker.
Most powered devices that have digital inputs, and will report on a change in input immediately can be set up for duress.
E.g. Dart2, G62, G100, G120.
DM does not supply duress pendants, but the below examples are models we have seen in use by our partners.
Ensure that you conduct your own testing to ascertain the suitability of pendants for the application.
Examples of Duress Remotes
Wiring Example: G100
Using the G100 harness to connect to the receiver module, identify the pins on the receiver and connect to the following G100 wires.
- Connect the 12V DC Power to the 12V Receiver Pin
- Connect the Ground to Receiver Earth
- Connect the Blue (Digital Input 2) of the G100 Harness to the 'Normally Open' Channel of the receiver
- Connect a Ground (Black) of the G100 harness to the Common 'Channel' of the receiver
- If you have a second channel, you can connect the green/black wire to a second Normally Open channel and then a second Ground (black) wire to the receiver's earth to connect a second pendant, or a low battery alert configuration.
OEM Server System Parameters
To add the appropriate parameter to receive a duress alert these are the settings required:
Function: Digital Input
Digital Input: Input 2 - Normally free to use, check if your unit has a pre-configured Digital Input 2 being used in TG or 3rd Party Platform
Bias Resistor: Pull-up - G100 wire is connected to Normally Open channel, Pull up to trigger
Active Level: Low
Log on Active: Yes - create a log reason in telemetry when Duress triggered
Upload on Active: Yes - create connection with server on occurrence of duress button being pressed
Emergency Uploads: Yes - high priority upload
Remember to TEST your Duress button function to ensure the safety function is operational and wired correctly before deployment
Some DM devices have BLE - what about a Bluetooth Pendant?
While possible, 433MHz pendants (like the examples) are preffered. They are available at a range of price points and transmission ranges.
The higher frequency BT signal does not travel as far, and can be easily blocked by surrounding buildings or other obstructions. They may not perform to the standard of a regular RF pendant, and as such they are not the preffered option.