UHPPOTE DC12V Wired Doorbell Door Bell Chime For Home Office Access Control System

Specifications: Wired door bell 12VDC for security access control Features a bell sound, small size and wall-mount hole, very easy to install Switch is not included Volume of doorbell: 90db Working Voltage: DC12V Dimension:- Approx. 3-1/2(W)x2-1/2(H)x1(D)in / - Approx. 88(W)x62(H)x24(D)mm Material: Plastic Color: WhiteNote:Wired Doorbell for access control system 'Ding-Dong' Voice output without built-in batteryCan't work with normal power supply,need work with special power supply included singal port (Please refer to 'ASIN: B00V55INJE')Please search 'ASIN: B00VBRURXG' for get complete system Package: 1 x Wired Door Bell for Access Control