The 80cm infra-red proximity sensor is a general purpose distance measuring sensors. This sensor takes a continuous distance reading and returns a corresponding analogue voltage with a range of 10cm (4") to 80cm (30"). The sensor is small and uses a JST connector. These connectors have three wires: Ground, Vcc, and Output. Because the sensor fires continuously it doesn't need any clocking to initiate a reading. It is easy to interface with any micro controller.