Now with Paddle Type Detector for more reliable performance and an upgrade to a Heavy Duty 3.0 amp switch that replaces the old 0.5 amp switch. Works for 1" and 1-1/4" Raw Water Hoses. Monitors Raw Water flow and activates an immediate boat alarm (not included) to prevent engine damage due to overheating. It is a Normally Closed two wire, non-polarity switch that opens with flow and closes if you loose flow. NOTE: A flow rate of 3 to 4 Gallons Per Minute is needed for proper performance. For smaller engines with lower flow rates, refer to #13209.
Multi-voltage 12v, 24v, 32v.