The coolest way we have ever seen to unlock a mag lock! No Touch Request-To-Exit Sensor uses IR technology to open a door or activate a device with the simple wave of a hand. The trigger distance is up to 4″. Since there is no physical contact, this sensor is ideal for use in hospitals, clinics, labs, cleanrooms and daycare (to reduce the risk of contamination it’s germ free) or for use in schools, factories, or offices (anywhere an easy way to exit is required). Features: •No Touch — just wave a hand in front of sensor. •Sensing range up to 4″ (10cm). •Attractive “ring” illuminator turns from green to red when the sensor is activated. •Reduce the risk of cross contamination. •Easy and clean operation. •Reliable IR technology senses motion. •Durable stainless-steel plate. •Quick-connect screwless terminal block. •SPDT 3A relay output.