Specification: Brand new Material: plastic Color: white, as picture shows Power: sensor 9V battery/receiver 2 AAbattery (not included) Transmitter Size: approx. 3.5 x 2.4 x 1.8 inch (L*W*H) Receiver Size: approx. 3.5 x 2.6 x 1 inch (L*W*H) Receiver Switch Setting: High / low volume / off The Infrared Wirele system alerts you the moment someone enters your property. With this system, you'll always have advanced notice that someone's on their way to your door. Compact, discreet motion-sensor unit installs on garage, mailbox, fence post, etc. nearly anywhere. And when triggered, it sends a wirele signal to the receiver unit, up to 400 feet away! When the unit's adjustable chime tells you you're about to have a visitor, you can prepare accordingly. The unit also works great for small businees. You can be alerted when a customer arrives in your store or garage. Installs in minutes, no tools needed; Completely wirele; Alerts you to visitors, trespaers, deliveries and more; Features: Includes wirele sensor and wirele receiver Just place the sensor at the entrance to your driveway and the receiver inside your home. It detects movements and sends a signal to the receiver from up to 400 feet away Alerts you when someone enters your driveway, such as visitors, vehicles, intruders, animals or kids coming or going! Advanced notice when someone or something enters before they surprise you. Scare them away! The chime set on high itself can scare unwanted visitors away. Use it to monitor any area inside or outside, it's wirele so you can place it anywhere in the house and even take it from room to room. Will alert busine owners, working in the back,to customers entering their store No wiring required, just turn it on. Motion activated, Wall mountable, Low consumption Simply attach the sensor to the fence or mailbox pole for long driveways, or directly above garage doors for shorter driveways, it installs in seconds, all you need is a screwdriver. Package included: 1 x Wirele Detector Alarm (transmitter) 1 x Receiver (with Mounting Swivels) 1 x User Manual Note: Please allow 1-2cm errors due to manual measurement Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same