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Option AL2 is an electric alarm with a flashing amber light and horn. System is activated by a single pole flow switch once the shower or eye wash is activated.Note: Option AL1 (non-flashing light and horn) has been discontinued. However, the Option AL2 manual/installation instruction guide does have its repair parts listed.
Model S0000-FLW1 is a 1-1/4" NPTI DPDT double pole, double throw flow switch has contacts which allow for remote monitoring (by others) and audio/visual alarms (by others). Switch is installed in the water supply line prior to the emergency equipment and is activated once it senses the movement of water in the supply line.