Telemetry TX & Telemetry RX

Telemetry TX and Telemetry RX are used to transfer one or two digital inputs (switches, water float switches, etc.) from sensors thru Motorola DMR Radios.

Transmit device can sample two inputs. Device can work in different ways, regarding the configuration:

  • transmitting input states when states changes,
  • transmitting input states in defined time intervals,
  • device can turn off radio when not transmitting (between time intervals) for saving battery,
  • transmitting input states when TEST button is pressed

Receive device receive signals from Motorola DMR Radio. User has access to “normal open” and “normal closed” relay contacts.

Use Case

We have water pump in valley pumping water in tank located on hill, where we have systems powered from solar cells (we must save power). Task is to equip both locations with Motorola DMR Radios and Telemetry TX and Telemetry RX devices. When tank is empty radio must transmit signal to pump. Pump starts filling the tank. When tank is full we must send signal to stop pump.

Wiring diagrams

Wiring diagram on TX side

On TX side connect Telemetry TX, Motorola MotoTRBO radio as showed on diagram.

If you have continuous AC power and do not have solar cells then Motorola MotoTRBO radio can be connected to permanent 12V. You can also omit IGN wire from Telemetry TX and connect to +12V.

Wiring diagram on RX side

On RX side connect Telemetry RX, Motorola MotoTRBO radio as showed on diagram:

Telemetry TX & Telemetry RX User Manuals