The explosion-proof model has a D.P. D.T. switch. Both the weatherproof and explosion-proof models are shipped complete with backbox. (Backbox is optional with other models, or you can mount to standard single-gang box.) These models are intended for use with all Siemens Building Technologies, Fire Safety Division conventional zones, but can also be used with addressable zones when used in conjunction with a TRI-Series addressable module.
These stations are equipped with a S.P. S.T. switch rated at 10amps @ 120 VAC and all connections are made to a terminal block.