Feature: 1. Wireless Smart Curtain Detector: Enhance your home security with this wireless smart curtain detector. It detects movement within a range of 4‑8 meters and 90 degree angle, providing reliable protection for your space. 2. Dual Power Supply Options: This infrared detector sensor can be powered by DC 5V or 2 AAA alkaline batteries (not included). Can be used at the same time, power automatically switched to battery power, not afraid of unexpected power failure. 3. Long Wireless Range: With a wireless distance of over 100 meters in an open area. The infrared detector sensor operates on a frequency of 433MHz ± 75KHz, providing a reliable and stable signal transmission. 4. Wide Applications: This infrared curtain motion detector is very suitable for installation in schools, office buildings, hospitals, family courtyards and other security systems. 5. Easy Setup and Integration: The wireless smart curtain detector is easy to install.. Simply place it in the desired location and enjoy enhanced security and peace of mind. Specification: Item Type: Infrared Detector Material: ABS Power Supply: DC 5V or 2 x AAA alkaline dry battery (not included) Standby Current: ≤50uA Operating Current: ≤25mA Detecting Range: 4-8M/90° Wireless Distance: ≥100 meters (open area) Frequency: 433Mhz±75KHZ. Package List: 1 x Infrared Detector2 x Base1 x Bracket1 x Hook and Loop Fastener2 x Screws