doorbell welcome sensor 905 Electronic Welcoming Guest Device

Description:

Advanced microcomputer technology and automatic human sensitivity are applied to LONGKE saluting guest/alarming doorbell. Extraordinary performance, energy saving and easy to use. Special sound device. Strong sensitivity, non-mislead and anti-interference technology make it effectively detect the movement in the detecting area of all environments. Meets different needs. It's suitable for dwelling house, tier building,multiple apartments hotels, factories, hospitals or any other places. It doesn't only bring the convenience but all happiness and security sense.

USE INSTRUCTIONS:

Effective alarming detecting distance is 5-10m. Don't surpass this area when you install it. Alarming sound depth 75-95bps. Put in 3 pieces of AA1.5V batteries. The static current is by microampere 3 pieces of AA1.5V batteries can last for more than two months. The doorbell should avoid being installed in the place where the ventilation changes much. Don't expose it to the sun and the rain.

Package included: 

1 x 905 Electronic Welcoming Guest Device 3 x AA1.5V batteries

905 Electronic Welcoming Guest Device