About this product: Reliable distance range: communication range up to 300m/ 1000ft (distance between sensors and receiver/alarm/chime) and detection range up to 8m (distance between sensors and objects detected). ADJUSTABLE VOLUME & MODE: Alarm volume is up to 100dB with 3 alert choices (high volume chime / low chime / alarm) and 3 mode choices (flashing / LED / sound & LED flash). DIFFERENT APPLICATIONS: Perfect for keeping you informed with a little warning before guests or intruders arrive. You can expand the alarm system for your home with up to 5 sensors or 5 receivers for your request. Installation Tips: Keep the PIR sensors in a clear path to the receiver and don't place the sensors where the wind will move them or change their detection angles, so you can get the best performance. Power supply: You can use 3 x 1.5V type C batteries (not included) or AC adapter (not included) for the receiver, and 3 x AAA batteries (not included) for the sensors. Never use type C batteries and AC adapter at the same time. Product Size:1 Receiver with 2 Motion Sensors | Color:White Driveway Security Alarm Kit. The Driveway Alarm provides a convenient and cost-effective way to alert you when someone is inquiring. When an object is detected, the PIR sensor sends a signal to the receiver up to 300 meters away and you will be informed and safe. Specifications: Operating distance: 300m (in the open air without obstacles). Motion detection range: 5-8m. Volume: 100dB (within 5m) PIR detection angle: 45 degrees. Protection class (PIR sensor): IP44. Power supply (receiver): 3 x 1.5V type C batteries / DC 6V adapter (not included). Power supply (PIR sensor): 3 AAA batteries (not included). Note: Do not mount the PIR sensor in direct sunlight (the PIR detects moving heat sources) or in a location affected by wind. Avoid mounting the PIR sensor and receiver near any metal objects. When installing the sensor outdoors, it is best to mount it in a shaded and protected location to minimize temperature changes. The receiver's ringtone may be affected by metal constructions, walls, and other devices with the same frequency. Contents: 1 receiver. 2 PIR sensors. 1 user manual (French not guaranteed). 4 dowels and screws.