DA123/S, Remote Setting Switch, Surface Mounting, Push Button Dantech Dantech Electronic Engineering. Specialists in the design and manufacture of electronic equipment for the security industry. Dantech Website DetailsDescriptionDANTECH DA123S DA123S, Remote setting switch, surface mounting. A highly water resistant final exit setting switch using a ‘normally open’ magnetically operated sealed dry reed switch. The push button diaphragm is a flexible moulding and there is no metal spring to corrode or break. Supplied with a neoprene gasket and hardened steel zinc plated fixing screws. Connections are via an integral 1metre long 4 core white flylead.