- Honeywell T136C110AEU digital programmable thermostat, perfect for hydronic, electric, gas, or oil heating systems - High-precision digital TPI control that minimizes temperature variations and improves energy efficiency - Automatic, manual, and vacation modes to suit different needs and protect against frost - Configurable energy-saving program with up to 4 daily settings on weekdays and 2 on weekends - Early start function to ensure thermal comfort at the desired time - Pump protection that prevents blockages by activating the pump periodically - Clear and precise LCD display with ambient temperature shown in 0.1 °C increments - Quick and easy installation with only 2 wires, compatible with home automation systems via optional remote input - Modern and compact design, hidden programming keys for greater safety and aesthetics - Low battery warning with 60 days' notice (operates with 2 AAA batteries, not included)