Remotely controlled electrical equipment e.g. television (TV) receiver and lighting units

摘要

These modules switch equipment on and off, remotely controlled by electromagnetic waves or ultrasonic waves from a hand transmitter. Several electrical units of equipment can be switched together. The figure shows the remote control (M), the transmitter (N), and the control keys (O), while the low voltage is supplied by 24 V lines (A) to the lights (B) with bayonet fittings (C) and the receiving sensor (F) responds to the waves transmitted, passing the signals to the receiving module (E).