Description
AQUALARM Bilge High-Water Level Detector, 12/24/32V – 20120 is a dedicated high-water alarm detector for bilges and other monitored compartments. The two-lead, non-polarity switch is normally open and closes when rising water reaches the detector, allowing it to activate a compatible visual or audible alarm.
Key Features
- Monitors rising bilge water independently of the bilge pump control circuit
- Normally open contacts close on high water
- Two-wire, non-polarity connection simplifies installation
- Rugged ABS/Lexan construction resists oil, dirt, grease, and typical bilge contamination
- Supplied with approximately 3 ft / 0.9 m of marine-grade tinned wire leads
Specifications
- Manufacturer: AQUALARM
- Part Number: 20120
- Function: Bilge high-water alarm detector
- Contact Type: Normally open; closes on rising water
- Polarity: Non-polarity, two-wire
- System Voltage: 12/24/32V DC
- Detector Height: 2-7/8 in / 7.3 cm
- Detector Diameter: 1-3/4 in / 4.4 cm
- Lead Length: Approx. 3 ft / 0.9 m
- Bilge Pump Control: No — alarm detection only
Installation & Compatibility
Mount at the high-water level where an alarm should occur, above the normal cycling level of the bilge pump. Connect to an AQUALARM panel, bell, buzzer, or other compatible alarm input. Do not use this detector as the automatic on/off switch for a bilge pump.
Application Notes
The detector is designed to tolerate dirty and oily bilge conditions and uses an anti-splash style arrangement to reduce nuisance alarms from normal bilge movement.

