clap on

Sound-triggered light switch

Clap on means to apply or attach something quickly and decisively: She clapped on her hat and rushed out the door.

The phrase suggests a swift, slapping motion.

In nautical contexts, to clap on sail is to add more canvas to catch wind.

The Clapper made "clap on, clap off" famous for sound-activated light switches.

activation

light

Visible electromagnetic radiation

sensor · automation · hands-free · touch-free · infomercial · convenience · gadget · novelty · trigger · response

Opposites
activation method

clap onturn off

Cease operation of

dimmer switch · switch off · shut off · deactivate · rheostat

control mechanism type

clap ondimmer switch

Light level regulator

dial · slider · rheostat · touch control · remote control

Family

clap, on, claps, clapped, clapping, clapper, clappers, clapboard, handclap

Familiarity
Top 500,000
Profile
Known to kids · Mostly American · Concrete · Positive · Everyday, not technical · Rated G