Product Specifications Application: Heat Only Dimensions (in.): 4 11/16 in. High X 2 7/8 in. Wide X 1 1/8 in. Deep Dimensions (mm): 120 mm high x 74 mm wide x 28 mm deep Comments: Adjustable Temperature Scale. Standard selection of 40 to 90F or Garage selection of 35 to 90F Mounting: Vertical Electrical Ratings: 20 to 30 Vac or 750 mV Frequency: 50 Hz,60 Hz Stages: 1 Heat Operating Humidity Range (% RH): 5 to 90% RH, non-condensing Power Method: Dual Powered - Battery or Hardwire Color: Premier White® Display Size: 1.32 sq in. Changeover: Manual Setting Temperature Range (F): Selectable Heat - 40 F to 90 F or 35 F to 90 F Setting Temperature Range (C): Selectable Heat - 4.5 C to 32 or 1.5 C to 32 C Cycles per Hour: Heating 2-6 CPH Heat Current: 0.02 A to 1.0 A running