King Electric K701E-B Simplstat Electronic Thermostat with Programmable Presets, Battery Powered, 1-Pole, 120/240V, 16 Amp 3 programmable presets (home/sleep/away). oversized back-lit display for easy viewing Battery powered. For use on baseboard, fan forced & radiant electric heaters Electronic sensing for accurate temperature control (+/- 1F). temperature range 41 - 95F (5 - 35C) Fully vented cover allows air sensing in all directions Mounts directly to a 2x4 inch vertical electrical outlet box. limited 2-year warranty