Door Bell Access Control IXHA DBA100 Wired Doorbell for access control system. #34;Ding-Dong #34; Voice output without built-in battery, connect to DC 12V Power Directly Specification: Material: Plastic Color: White Power:3W Source Voltage: 220V Wired door bell 12V for security access control Connect to DC 12V power directly Switch is not included Volume of doorbell: 90db Working Voltage: DC12V Red to 12V(+), Black to GND(-) Features a bell sound, small size and wall-mount hole, very easy to install Garansi 3 Bulan