The Clapper Switch Control 1 or 2 things at the same time by simply clapping your hands. Great for lamps and Christmas tree lights! CLAP ON, CLAP OFF 2 CLAPS/3 CLAPS SETTING: connect to the 2 or 3 clap outlet, then activate each one with 2 or 3 claps respectively. Features Clap Detection Lights: Lights glow in sequence when proper claps are detected. Indicator lights glow when a connected appliance is clapped off. Home/Away Switch: Adjust for softer or louder claps. In AWAY setting, connected appliances will turn on with the detection of any sound.