Light switch

src: media.ldscdn.org In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected...

Remote control

src: a.pololu-files.com In electronics, a remote control or clicker is a component of an electronic device used to operate the d...

HVAC control system

src: www.reliance-scada.com HVAC ( H eating, V entilation and A ir C onditioning) equipment needs a control system to regulate the operatio...

Focus puller

src: media.npr.org A focus puller , or 1st assistant camera, is a member of a film crew's camera department whose primary responsibility...

Telephone tapping

src: image.shutterstock.com Telephone tapping (also wire tapping or wiretapping in American English) is the monitoring of telephone and I...