Lux Non-Programmable Easy Temp Heat-Only Mechanical Thermostat

Features: Standard Heat Only Accurate Universal Replacement Snap Action Mechanism Decorative Wall Plate & Installation Hardware Included 3 Year Limited Warranty Contains No Mercury For Use On: Most 24V Heat Only Systems 1 Stage Heat (Gas, Oil or Electric) 2 Wire Heat Only Hydronic Systems (Hot Water Baseboard & Radiator) Millivolt Systems (Wall Heaters & Gas Fireplaces). Not For Use On: Compressors without Time Delays Cooling Systems Heat Pump Systems 3 Wire Hydronic Systems & Line Voltage Systems (120/240V)