Background self-learning function.Active infrared technology with anti-interference self-adjustment capability.The motion radar with unidirectional function can save more resources; 3-D safety light curtain , no additional safety sensor is needed.Both two functions of start-up and anti-pinch.Multi- technology is used for the combination of opening automatic doors and making them safe. These multi- sensors also fulfil a number of additional functions which can significantly increase the convenience of the door.Model Number: CNB-235Application: Hotel/building/office/mall/hospital/cleanroom etcPower input: AC/DC 12V~24VWorking temperature: -20~55 Sensor Distance: 2500mmMaterial: Metal+plasticcolour: SilverPackage Contents: 1 x Multi- 2 in 1 door sensorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.