LuxPro PSD100 Non-Programmable Thermostat Battery powered digital heating and cooling thermostat with a large easy-to-read display and with temperature swing adjustment. Features -Electronic Accuracy -Non-Programmable -Horizontal style -Clean attractive design -Large, easy-to-read display -Temperature swing adjustment -Universal replacement -Low battery indicator -5 minute compressor delay -5 minute minimum on time -Heating and cooling digital thermostat Compatible With -Most 24v Gas, Oil, Electric Heating and Cooling Systems -2 wire hydronic systems -Millivolt systems -Hydronic air handlers Non Compatible With -3 wire hydronic systems -Heat pumps -Multi-stage gas or oil furnaces -Line voltage systems (without transformer) PSD100 Detailed Specifications Dimensions: 4-1/2" wide x 2-3/4" tall x 1-1/4" deep. Electrical Ratings: 1-1/2 AMPS at 24v AC. 2 "AA" batteries included. Temperature Control Range: + or - 1/4o F/C. Temperature Swing Adjustment: 45oF to 90oF (7oC to 32oC). Compatibilities: 2-5 wire forced air systems. 2 wire zone hydronic systems and hydronic air handling systems. Terminals: G, Y, W, RH, RC. Solid pin connectors allow usage with both 24V and millivolt equipment.