sensor capacitive proximity
It's built on the sensor capacitive proximity, which is cutting-edge technology, that can detect an object's presence or absence without having to touch the thing at all. It carries out this by generating an electric field and measuring how this changes as an object comes close or recedes. The sensor's functionality includes detecting the proximity of objects, counting its number and triggering things like alarms when a set limit is met or surpassed. Technical features include high sensitivity and rapid response times as well as the ability to handle different materials of all sorts, from single-crystal silicon right through to ceramics. Applications of the technology are many and varied, everything from manufacturing automation and consumer electronics through to home security systems.