12V Wired Doorbell 4 Core Door Bell Alarm for Home Office Access Control System

Features: External wired doorbell, ideal choice for security access control system. Featured with a clear, loud and soft "ding dong" ringing sound. Premium ABS plastic material, anti-oxidation, anti-discoloration for maximum durability. Superior performance and high reliability, ensure excellent alarm function. Two installation methods of wall-mounted and double-sided adhesive tape, easy and convenient. Specification: Condition: Brand New Material: ABS Main Color: White Operating Voltage: 12V DC Operating Current: 20mA Operating Temperature: -10 celsius -45 celsius Relative Humidity: 40percent RH-90percent RH Installation Mode: Wall-mounted or double-sided adhesive tape(Excluded) Wire Connection Mode: Red: + 12 V; Black: GND; Green: BELL1; Yellow: BELL2 Size: Approx.86*86*25mm/3.4*3.4*1.0in Package Weight: Approx.83g/2.9oz Package List: 1 * Doorbell