Secure H3747 4-Channel Smart Programmer Timeclock

The Secure H3747 is a 4-channel smart programmer built for multi-zone heating and hot water control. Designed to replace the ChannelPlus range using the same 9-pin backplate, it handles combi boilers, system boilers, heat pumps, and existing wired thermostats with minimal rewiring.

Main Features:

• 4-channel control – Manages up to 4 separate heating zones or combination of heating and hot water systems
• Retrofit-ready design – Uses standard 9-pin backplate for direct ChannelPlus replacement
• Smart connectivity – Bluetooth app control included, with optional plug-in Wi-Fi adapter for remote access
• Boiler Plus compliant – Features optimum start/stop and load compensation for improved energy efficiency
• Long-lasting power – 12-year battery life warranty on programmable thermostat display (PTD)
• No hub required – Bluetooth control locally, or add Wi-Fi card for remote heating management
• Modular and expandable – Compatible with extra sensors for additional zone control
• 7-year warranty – No-quibble coverage for peace of mind

Benefits:

The H3747 streamlines complex heating system upgrades by working with existing ChannelPlus infrastructure. Click-off/click-on mounting speeds up installation, while dual-platform apps (Android/iOS) offer flexible control for installers and end users. Load compensation automatically adjusts heating output based on outdoor conditions, reducing fuel consumption and improving comfort. The system prevents boiler short-cycling and temperature overshoot, extending equipment life and cutting energy waste. Service interval reminders support proactive maintenance, and Energy Company Obligation eligibility makes it suitable for funded upgrade projects.