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The Edwards 275-C111 is a single-action, conventional pull station. This pull station is becoming increasingly rare, and is mostly seen on vintage Edwards fire alarm systems. This pull station was introduced in 1987, and was discontinued around 1992-1993. User:YYCsFireAlarmNimrod owns one of these pull stations, and it is currently installed in YYC'sFireAlarmNimrod's Basement.
How to operate
Simply grab the top of the station with four fingers and pull hard, and the front will drop forward. To reset, insert a flathead screwdriver or a metal rod into the hole and apply pressure on the tab, and push up and the station will go back into place.