Edwards Signaling 2315A-L, MAGIC CONTACT, OVERHEAD DOOR, P

welcome to GTV today I will be showing you Edward signaling 340 series AC vibrating valves these ac vibrating bells produce a long continuous ringing sound with the striker continuously striking the gong and rapid-fire action as long as current is applied they have a self compensating solenoid plunger and are rated 400 hours activity percent duty cycle the universal adapter plate mounts directly on surface or fits any single gang box as well as three-quarter inch three half-inch or four-inch octagon box the adapter plate can also mount on any plaster cover with mounting holes on two 3/4 inch centers the six and 10-inch bells also mount on the four inch square boxes the bells can be used for timing scheduling paging and general alarm applications four inch sized bells are recommended for quiet office areas the six inch sized bells can be used for more moderate noise level areas such as g