Features: Suitable for the need of home, pffice, shops, factories, ect No Wiring is required, easy to use Keeps you aware of intruders or visitors anywhere around your home Specifications: Model£º5301 Input Voltage: DC9V Effective Alarming Detecting Distance: 5 - 10m Effective Angle: 110 degree Alarming Sound Depth: 75 - 95 decibels Power Supply: 3 * AAA 1.5V battery(Not included) Colour: White Package includes: 1 * Wireless welcome alarm