Replaces obsolete RET-B, RET2000B. Connects to the same 2 wires.
The RET2001B benefits from selectable on/off and chrono-proportional control. Chronoproportional control significantly improves comfort and generally improves boiler efficiency by optimising water temperature.
• Selectable Chrono Proportional or On/Off control
• User Set Upper and Lower Temperature Limits
• Output On Indication
• Push Button Lock
• Frost Protection Mode
• Away Mode
• Dimensions: 86x86x30mm HxWxD