Touch-Free Sensor Switch with Blue Backlight for Access Control Systems. Features infrared optical technology: The button glows blue in standby mode, making it easy to locate even in low light. When infrared light is triggered, the backlight turns red and the door opens. This infrared switch has a non-touch output, commonly used in access control systems. Touch-free infrared output sensor: Stable and professional performance. Premium stainless steel plate material: Solid, corrosion-resistant, and durable. Exquisite workmanship and stylish appearance with 2 LED color indications for practical use. Simple and convenient to install, easy to operate and use. Specification: Condition: 100% Brand New Item Type: Door Exit Button Material: Metal Color: As shown in the picture Size: Approx. 86 x 86 x 25 mm/3.4 x 3.4 x 1 inch Input Voltage: DC12V Standard Structure: Plexiglass touch trigger Electrical Performance: 3A / 12VDC Contact Output: Normally Open / Normally Closed / COM contact Durability Test: 500,000 aging tests qualified Application: Suitable for various door frames Applicable Temperature: -20 - + 50℃ Applicable Humidity: 0% - 95 (relative humidity) Trigger Device: Infrared sensor Package List: 1 x Infrared Sensor Switch 1 x Mounting Screw Bag