Timeclock 4 Channel Digital Bluetooth Enabled

The H3747 is a versatile 4-channel smart programmer compatible with combi and system boilers, heat pumps, and wired thermostats. It offers Bluetooth connectivity out of the box, with optional Wi-Fi for remote access, and is designed for easy retrofits with a standard 9-pin backplate. Ideal for modernizing heating systems, it features Boiler Plus compliance, optimum start/stop, and load compensation for enhanced efficiency.