Wide application range: The wireless motion sensor can be used to monitor and protect your outdoor/indoor properties. Can be installed in entryway, front porch, doorway, swimming pool, garage, shed etc. It is ideal for homes, businesses and offices. The sensor works properly in all seasons and the working temperature ranges from -30 to 150 (-30 to 70). 800m range length wireless transmission: Motion sensor and plug-in receiver receive alarm signals up to 800m away (actual range depends on local terrain), and it is a good solution to monitor and protect properties over a large area. Advanced wireless transmission technology (FSK+FHSS) is adopted for the system to avoid interference from other devices' wireless signals. 21m motion detection range: The motion sensor can detect moving people or vehicles within a range of 10-15m. The updated motion detection chip and detection angle can reduce false alarms due to fallen leaves/small animals, sunlight/wind/temperature changes, etc., and is ideal for exteriors/indoors where You would like to receive an alert, such as the entry of cars, paths, courtyards, courtyards, garages, gates and swimming pools. Plug and play, easy to install: Simply charge 3 x 1.5V AA alkaline batteries (batteries not included in the package) and connect the receiver to the power outlet to complete the installation. The packaged product has been configured before delivery, and just place the sensors on the wall, fence post, tree or other surface, and you can complete the installation in minutes.