High Water Alarm with Ultima Switch featuring digital technology using the patented Mirus field effect. Totally sealed fluid detector is never in contact with water, will not corrode and is not affected by oil or debris. Bilge Alert detects water and sends a signal (3 seconds delay) to the alarm and switch conveniently mounted on a panel. Three way rocker switch allows alarm to be tested, turned off and armed (Test-Off-Armed).• Alarm Type: Audible• Display Panel Size: No Display• Voltage: 12 Volt• Amp Draw: 20 Amp• Color: Black• Compliance: ISO 8846 Compliance• Includes: With Ultima Switch• Environmentally Sensitive, No Mercury• No Exposed Sensors Eliminate Corrosion Possibilities• Unique 3-Way Switch Disables Piezo Alarm While Keeping Warning LED Lit• Meets ISO 8846 Ultima Switch Is Rated To Handle All Johnson Pump Submersible Pumps Up To 20 Ampere At 12 Volt No Moving Parts Totally Sealed Solid State Electronics & Field Detectors | Johnson Pump Bilge Alarm, Detects Water And Sends Signal