A hand-held transmitter is a small radio remote control. It sends a radio signal, usually at 433 MHz, to the receiver in the ventilation control. The control unit then opens or closes the connected actuators.
Transmitter and receiver must match. Transmitters from other manufacturers usually do not work.
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Related terms: Radio remote control (433 MHz) · Ventilation control (window control) · Tubular motor · Zigbee and Matter (smart home)
