<p>Features</p> <p>[Wireless Motion Sensor Alarm] Includes 1 receivers and 2 transmitters, with 3-7m\/ 9.8-22.9ft effective detection range, 120 detection angle, can effectively detect movement in surrounding areas and trigger alert to the linked receiver.</p> <p>[Large Wireless Transmission Distance] Signals with strong penetration force can be sent to the receiver more than 200m\/ 656ft away to warn you, providing security for your property and loved ones.</p> <p>[IP52 Waterproof] With large waterproof cover and deepened groove, no fear of rainy days, suitable for outdoor use, widely applied in front do</p> <p>ors, window frames, driveways, walking paths, shops, garage, and more.</p> <p>[38 Chimes Optional] There is always one chime you and your family love; with built-in high-quality speaker, low power consumption, 4 levels of adjustable volume, no worry of that you can't hear the ringing.</p> <p>[Power Supply] The receiver can be easily plugged into a standard outlet inside your home, and the transmitters are powered by 3 * AAA batteries (not included), convenient for placing them at the entrance to your driveway.</p> <p>Specifications</p> <p>Color: Black</p> <p>Material: ABS</p> <p>Detection Angle: 120</p> <p>Detection Range: 3-7m</p> <p>Transmission Range: 200m (without obstacles)</p> <p>Frequency: 433MHz</p> <p>Ringing Tones: 38</p> <p>Power Supply of Transmitter: 110-240V plug</p> <p>Power Supply of Receiver: 3 * AAA batteries</p> <p>Transmitter Size: 8.5 * 8 * 2cm\/ 3.3 * 3.1 * 0.78inch</p> <p>Receiver Size: 8 * 8 * 5.5cm\/ 3.1 * 3.1 * 2.1inch</p> <p>Package List</p> <p>2 * Transmitter</p> <p>1 * Receiver</p>