12v Wired Doorbell Vocal Chime For Office & Home Access Control System. Product Description Enhance Your Office or Home Security with the Asia-Teco Wired Doorbell Chime, Model B12-A. Designed for Seamless Integration into Access Control Systems, This Wired Doorbell Ensures Reliable Performance with Its DC 12V Power Source. Made from Durable Plastic, the Compact Design (86*60*23mm) is Easy to Install, Featuring a Wall-mount Hole for Your Convenience. Enjoy a Clear Ding-Dong Sound with a Volume of 90db, Perfect for Any Environment. Simply Connect to a DC 12V Power Supply for Continuous Operation. Features - Model: B12-A - Brand: Asia-Teco - Color: White - Power Source: DC 12V - Power Consumption: 3W - Volume: 90db - Dimensions: 86*60*23mm - Installation: Easy Wall-mount - Connection: Red to 12V(+), Black to GND(-) - Application: Ideal for Office and Home Access Control Systems - Package Includes: 1 X Wired Door Bell Note: Switch Not Included. Please Be Aware of Manual Measurement Variations and Potential Display Color Differences..