Infrared Detector, Lightweight 1pair 20m Simple Beam Alarm, Photoelectric Infrared Sensor Detector Home Door Security System

Description:This pair of infrared detector need install them at the opposite positions. There is a infrared area between these two detector parts. When someone passes the infrared region for an adjusted response time, the detector will send alarm signal, great for security system in school, office building, hospital, parking and home yard, etc.
Specification:Condition: New BrandColor: BlackShell Material: PlasticReceiver Range : Less than 20mInfra-red Frequency: 1.92KHZWavelength: 940nmVoltage: DC 12VInput: RX 15mA-TX 30mAOperating Temperature: -10℃ to 70℃Relay Output: 1A maximum 30V, constant open/close, can be set by jumper wireSize (L x W x T): Approx. 76 X 49.2 X 21.6mm / 3 x 1.9 x 0.9inchPackage Weight: Approx. 130g
Package Included:1 x Transmitter1 x Receiver1 x Set of Accessories1 x User Manual
Note:1. The best installation height should be more than 20 cm, distance is not less than 2 meters. 2. Infrared protection device should be installed vertically, and at the same level.3. First installing receiver, then installing transmitter. When the off light of receiver is turning off, then fixed it, installation finished.4. Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.