Leak Detection. Sound the alarm while the leak is small and manageable. The Rechner leak sensor has a small very compact housing. The molded body has a built-in 3.5mm gap for easy installation and set up. No programming required. This sensor has a built-in auto adjust program to ignore the drip tray and only detect any liquid that is leaking into the sensing area. The drip tray can be made of metal, plastic or even glass. Included with the sensor is a simple to use mounting bracket to hold the sensor in place. The sensor is made of PTFE (FDA 21 CFR 177.1550) and is designed to work in the chemical industry and semiconductor industry.