Eldat Push-button transmitter RT28E5001-11-23K 868 MHz 1 channel

The RT28 push-button transmitter in anthracite (similar to RAL 7016) in a functional design with a large control knob.
It is most frequently used for switching electrical loads with 1-button operation or as a bell button in conjunction with the RCP24 radio chime.
If a battery change is necessary, this is signaled by the LED. If the battery is running low, a separate radio signal is sent which can be evaluated with a corresponding Easywave receiver.