Ergophone radio receiver TRX
The external Ergophone radio receiver TRX serves to receive calls which are initiated by an Ergophone transmitter TRX (radio pendant, technical radio transmitter, radio cord pull switch, radio smoke detector, radio thermal detector, radio tile, radio sensor mat). The call (or the smoke alarm) is sent on from the radio receiver TRX to an Ergophone telephone with contact-input.
The radio receiver TRX is bidirectional. The device includes a transceiver (TRX), which can send and receive.
If an emergency call is triggered by a radio transmitter, the receiver sends an acknowledgment of receipt to the sender. However, this assumes that the transmitter is also bidirectional.