Digital manual triac thermostat Ultimate temperature control - the most accurate type of thermostat on the market On-screen heating command indicator gives at-a-glance verification of power being sent 2-wire non-polarized connection fast, hassel-free installation Up/down buttons enable easy temperature setting Precise LCD shows room temperature in increments of 0.1°C or 1°F Also ideal for radiant ceilings Battery-free backup means no re-programming your schedule after power outage Maximum Load: 3000W@240V, 1500W@120V ADVANTAGE OF TRIAC SWITCHING: 15 second cycles = 100% silent operation - ideal even for bedrooms - unsurpassed temperature control eliminates temperature swings - no temperature swings means you are comfortable to a lower set-point - comfort at a lower set-point saves money on heating bills Save up to 33% on energy costs Temperature range: 5°C-27°C (40°F-80°F)