Wired Doorbell Compatible with Home Access Control System Ding Dong Chime

1 Quality flame retardant ABS shell, durable to use, and it looks simple and generous. 2 Mechanical doorbell, can be used with most doorbell switch. 3 Wired power supply, convenient and practical for using. 4 Wall-mounted installation, no need complicated tools, save time and effort. 5 High power speaker, provides loud sound and strong penetration.

What's in the box
1 x Wired Doorbell Manual Ding Dong Bell