Touch Sensor Pannel NO NC COM Exit LED Light Access Control Switch Button for Home Security gray.Features: Acrylic board and PC flame retardant material, not easy to damage, durable to use. Touch sensor design, When the finger touches it, it will output the on or off signal, when the finger move away, it will show to be touched on standby. It is indicated with double color LED light. Support most scenarios of business institutions, offices, factories, residential areas, etc. Easy and convenie