Wireless Motion Sensor Alarm includes 1 receiver and 2 transmitters with a 3-7m (9.8-22.9ft) effective detection range and 120-degree detection angle. It can detect movement in surrounding areas and trigger an alert to the linked receiver. Offers a wireless transmission distance of up to 200m (656ft) in open areas, providing security for your property and loved ones. IP52 rated for weather resistance, designed with a waterproof cover and deepened groove, making it suitable for outdoor use. Ideal for front doors, window frames, driveways, walkways, shops, garages, and more. Features 38 selectable chime options with a built-in high-quality speaker and 4 levels of adjustable volume. The receiver is powered by AC adapter (110-240V), while the transmitters operate on 3 x AAA batteries (not included), allowing flexible placement. Detection angle: 120 degrees. Detection range: 3-7m. Transmission range: 200m (open area). Frequency: 433MHz. 38 ringing tones. Receiver power supply: 110-240V AC adapter. Transmitter power supply: 3 x AAA batteries (not included). Transmitter size: 8.5 x 8 x 2cm (3.3 x 3.1 x 0.78 inches). Receiver size: 8 x 8 x 5.5cm (3.1 x 3.1 x 2.1 inches). Package includes: 2 x Transmitter, 1 x Receiver.