●Volume of doorbell: 90db ●Switch is not included; A good replacement for the old and broken one. ●External wired doorbell for security access control connect to 12VDC power directly. ●External wired doorbell for access control system; Need to work with the access control system built-in bell function. ●The people from the outside press the doorbell button on the access control unit, this doorbell will sound "Ding-Dong" tone and notify those inside that there is someone wanting to come in.
Description
Specifications:
Wired door bell 12VDC for security access control
Features a bell sound, small size and wall-mount hole, very easy to install