Overview: The Intelligent & Greeting Warning Doorbell The product uses advanced micro-computer manufacturing technology, automatic body sensing, high performance, energy-saving ease of use. Sensitivity, and without inadvertently touching, interference, sothat it can effectively monitor the environment. More suitable for the needs of the market closer to be lives of consumers, applicable to the office, home, shops, factories & other places, bringing the cinvenience, but alse bring unexpected joy & a sense of security. User Intructions:1, Put in three pieces of AAA 1.5V batteries.the static current is by microampere 3 pieces of AAA1.5V batteries can last for more than two months.2, Effective alarming detecting distance is 5-10m, effective angle 110 degrees. Don't surpass this area when you install it.3, Nearly 20 kinds of optional music, & welcome voice 4, Adjustable detection angle Technical Parameter: Voltage:DC4.5V (3 batteries of AAA 1.5V)
Volume:75-95 decibels Specification: Dimensions: 90 X 85 X 45 mm Weight: