The PANASONIC part ESE-22MV21T is a switch detector with a normally open single-pole, single-throw (SPST) lever configuration. It is designed to be mounted via gull wing leads and uses a surface mount device (SMD) package. This switch detector has a current rating of 0.01A and operates on a voltage of 5VDC. It is supplied in tape and reel packaging for ease of handling during assembly.