Description :

• B04 Wired DoorBell DC 12V Access Control System Suitable For Home,Office,Shops,Hotel And Factory DoorBell

Specifications:

• Power Supply: DC12V
• Humidity: 0~95%(relative)
• Surface Material: Fireproof ABS Material
• Temperature: -15~80 degree
• Power Source: Plug
• Color: White
• Application: Hotel,Office,Apartment,Private Villa.etc
• Size: 88*62*24mm
• Weight: 0.08kg

Advantage

1, No need battery!There are 4 colors of wires,ren,black,yellow and green.When you connected to DC 12V power supply,then the red connected to positive( ),the black connected to negtive(-).When yellow and green short ciruit,will hear two Ding-Dong,Ding-Dong sound !
2, Fireproof Case.Durable.Fireproof.Heat-resistant.Can be used very long time.
3, Intellective chip.Wide application.