"" Note: it can operate at a distance between 2 and 15 meters. You can remove the lens cap when testing over a short distance to reduce the infrared focus. Overview: This is an improved version of the single beam sensor with the latest LED light and more smt components compared to the old handmade model with 3 lights, it is more stable and reliable. When it interrupts infrared, the relay emits a switching signal; it can work for the access control system, the parking barrier, the vehicle access barrier, the vehicle gate and the alarm system as body induction. It can also function as burglar-proof window, door and passage detection or used in museum anti-theft. features: * Single beam infrared sensor with high levels of anti-RFI / EMI capacity. * Anti-glare up to 50,000 LUX, to avoid glare or car fires. * Rainproof design (fog), dust (worms) and other bad weather, the detector sensitivity will automatically increase (AGC circuit). * High power transmitter, excess sensitivity up to 90%. * High power infrared receiver tube, low power processing technology. * Adjustable of the beam ban period, to make it more flexible and adaptable. * In the event of an interruption, the relay output switching signal is voltage free. * Professional anti-jamming optical unit. Characteristics: Power supply: 12V to 24V DC / AC Input: RX 15mA - TX 30mA Infrared frequency: 1.92Khz Wavelength: 940nm Working range: 2-15m Detection distance: 20m (open area) Switch: N / O & N / C Optional Work with: access control system / parking barrier / alarm system, etc. Working temperature: -30 ° C to + 50 ° C Item size / each: 78 * 50 * 30mm (D * W * H) Item weight (with case) / Each: 36g Package information: Package size: approx. 13.8 * 8.4 * 4.5cm / 5.4 * 3.3 * 1.8in Package weight: approx. 125g / 4.4oz Packing list: 1 * pair of beam sensors 1 * set of mounting screws 1 * User Manual ""