Connected Doorbell and Video Door Phone -IR Infrared Non-electric Door Push Button Output for Glass Access Control Highlights brand generic IR Infrared Non-electric Door Push Button Output for Glass Access Control Description : 50 million times aging quality test, safe and durable. Wall mounted door exit switch with LED backlight. Dual LED blue (standby) and green (reaction) color indication. Suitable for most electric lock controls. Widely used in door entry access control system. Specification: Material: Size: 8.6x8.6x2.6cm/3.39x3.39x1.02inch Package Include: 1 Piece Door Exit Switch 1 Piece Connecting Cable Note: Due to manual measurement and lighting effects , there is a slight difference between the size and color of the above item and the actual item.