• Universal Adaptaplate® mounts directly on surface or electrical box

• Weatherproof by adding 449 back box

• 4" , 6" , 8" and 10" gong sizes

DC vibrating bells produce a long continuous ringing sound. The striker continues to strike the gong in rapid-fire action as long as current is applied.

Universal Adaptaplate mounts directly on surface or fits any single gang box, 3 1/4" (83mm), 3 1/2" (89mm), or 4" (102mm) octagon box, or any plaster cover with mounting holes on 2 3/4" (70mm) centers. 6" and 10" bells also mount on 4" (102mm) square boxes.