Skylink HA-318T Household Alert Indoor/Outdoor Motion Sensor

Wireless motion sensor provides instant alerts. You don't need to run wires or install an elaborate system in order to receive an immediate alert if motion is detected inside or near your home. When motion is detected, the Household Motion Alert Sensor sends a wireless signal to the Household Alert Receiver (not included), which in turn notifies you immediately with both audio and visual indicators. The motion sensor requires a 9-volt alkaline battery, not included. The Household Motion Alert Sensor can be purchased together with the Household Alert Receiver as a kit. Since the Household Alert Receiver expands to accept signals from four sensors, the Household Motion Alert Sensor can also be used to expand the Household Water Alert System, the Household Garage Door Alert System or the Household Door/Window Alert System. A Combination Set is also available, which includes both the Garage Door Alert Sensor and a Motion Alert Sensor to trigger its Household Alert Receiver. Mount the motion sensor indoors or outdoors, anywhere you fear security may be breached. With its motion-sensing range of 40 feet and its signal range of 300 feet, you'll be able to place the receiver in any convenient location in your home.