Includes 1 receiver and 2 transmitters, with a 3-7m (9.8-22.9ft) effective detection range and 120-degree detection angle, capable of detecting movement in surrounding areas and triggering an alert to the linked receiver. Large wireless transmission distance allows signals to reach the receiver from over 200m (656ft) away, providing security for your property and loved ones. IP52 waterproof rating with a protective cover and sealed design ensures reliable outdoor performance in various weather conditions. Suitable for use at front doors, windows, driveways, walkways, shops, garages, and more. 38 selectable chime options allow you to choose a sound you and your family prefer. Built-in high-quality speaker with 4 adjustable volume levels and low power consumption ensures clear audible alerts. The receiver can be powered via standard electrical outlet, while the transmitters operate on 3 x AAA batteries (not included), enabling flexible placement at entrances or remote locations. Specifications: Color: Black Material: ABS Detection Angle: 120 degrees Detection Range: 3-7m Transmission Range: 200m (open area, no obstacles) Frequency: 433MHz Ringing Tones: 38 Power Supply Receiver: AC 110-240V plug Power Supply Transmitter: 3 x AAA batteries (not included) Transmitter Dimensions: 8.5 x 8 x 2cm (3.3 x 3.1 x 0.78 inches) Receiver Dimensions: 8 x 8 x 5.5cm (3.1 x 3.1 x 2.1 inches) Package List: 2 x Transmitter 1 x Receiver