Alpha 340-4E5 4' Vibrating Bell-Surface -12 VAC

4' Vibrating Bell-Surface-12 VAC. AC bells produce a long continuous ringing sound. The striker continues to strike gong in rapid-fire action as current is applied. Universal Adaptaplate® mounts directly on surface or fits any single-gang box, 3 1/4' (83 mm), 1/2' (89 4 ' (102 mm) octagon plaster cover with mounting holes 2 3/4' (70 centers. 6' and 10' also mount 4' square boxes.Specified for timing, scheduling, paging general alarm applications. sizes recommended quiet office areas. (152 moderate noise level areas such factory (254 loud heavy machine shops.

• Universal Adaptaplate electrical box
• Weatherproof by adding appropriate back box
• Completely assembled, all hardware supplied
• Shockproof die cast housing
• Dustproof