Rule Industries RM500B Rule-Mate Automatic Bilge Pump 500 GPH 12V

The Rule Industries RM500B Rule-Mate is an eco-friendly automatic bilge pump that uses advanced solid-state water sensing technology to eliminate the need for a separate float switch. This innovative 500 GPH pump features unique "field effect" sensor technology that intelligently detects water while remaining unaffected by straight motor oil in the bilge, preventing false activation and unnecessary battery drain.

Key Features:

• 500 GPH pumping capacity at 12V DC
• Solid-state water sensing technology with no float switch required
• Field effect sensor ignores oil contamination for reliable operation
• Fully automatic operation for hands-free bilge management
• Compact design fits in tight bilge spaces
• Energy-efficient operation extends battery life
• Integrated strainer base prevents debris clogging

The Rule-Mate RM500B is ideal for small to mid-sized boats, providing reliable automatic bilge pumping without the mechanical complexity of traditional float switches. The solid-state sensor is mounted in the pump base and activates when water reaches the sensor level, then automatically shuts off when the bilge is pumped dry. Perfect for backup bilge protection or as a primary pump in applications where space is limited.