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: BlackPackage 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!