The Suburban 161154 Thermostat is a single-stage heat only RV thermostat that works perfectly with your furnace.• 12V• Connection: Screw termination• Switch Action: Snap Action• Anticipator Rating: Heating â Adjustable from 0.15 to 1.2 Amps• Temperature Range: 50°F to 90°F (10°C to 32°C)• Operating Humidity Range: 0 - 90% non-condensing• Used with 12V Suburban furnaces• Mechanical readoutNOTE: Thermostat replaces standard heat only systems, millivolt heat only systems, floor or wall furnaces, gas or oil heat, and hydronic (hot water) zone heat â 2 wires. 50°F to 90°F temperature range Mechanical readout | Suburban 161154 Single-Stage Heat Only RV Thermostat