
The Davey RB2/SR is an intelligent rainwater harvesting controller designed specifically for submersible pump installations. This standalone replacement controller uses patented dual-source technology to automatically prioritise rainwater from your tank, seamlessly switching to mains backup when the tank is low or empty. The controller features built-in dual check valve backflow protection, intelligent flow detection, and seamless mains backup during power outages—all without solenoid valves that can block or jam. The RB2/SR transforms your existing submersible pump into a complete water-saving RainBank system.