: 100% brand new and high quality. With high levels of anti-RFI / EMI capability Made of high quality plastic shell, eco-friendly, durable and sturdy to use. Create a reliable and invisible infrared beam up to 20 meters. Sealed design to anti-rain (fog), dust (worms) and other integrated weather, the detector sensitivity will increase automatically(AGC circuit) High-power transmitter, sensitivity surplus degree up to 90% Adjustable of beam interdiction period, to make it more flexible and adaptable Specification: Model: ABO-20S Color: Black Shell Material: Plastic Receiver Range : Less than 20m Infra-red Frequency: 1.92KHZ Wavelength: 940nm Induction speed: 30ms Voltage: DC 12V-24V Input: RX 15mA-TX 30mA Operating Temperature:-25 to 55 Relay Output: 1A max 36V Size (L x W x T): Approx. 76 X 49.2 X 21.6mm / 3 x 1.9 x 0.9inch Package Included: 1 x Transmitter 1 x Receiver 1 x Set of Accessories 1 x User Manual Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3cm differences due to manual measurement.