Digital wired non-programmable thermostat ideal for hydronic heating applications. Compatible with gas, oil or electric systems. Ideal for use with standard and combi boilers (On/Off; Relay: 230V 5(2)A), electric heating, zone valves. High-precision digital TPI control minimizes temperature changes for unrivalled comfort – precise LCD shows room temperature in increments of 0 1 °C Comfort economy and holiday (frost protection) Presets enable temperature changes at the touch of a button Ultra-compact design one of the smallest thermostats on the market Pump protection activates pump for one minute every 24 hours to prevent seizure Low battery indicator gives 60-day warning to replace battery (2 ‘AA’ batteries required — not included)