Battery Operated - Programmable Thermostats - Thermostats - The Home Depot
TTD101 battery-powered digital chrono-thermostat thermostatic head with display
Wengart Gas Fireplace Thermostat WG01BW,Battery Powered,Large Digital LCD Display,Programmable,COM-NO-NC Wire Connector,White with Blue Backlight - Amazon.com
Danfoss | 087N6471 | White
Digital Room Thermostat, Programmable Wireless Thermostat LCD Wall Mounted Battery Powered Thermostat Temperature Control for Hotel Hospital School Office ( Battery Not Included) : Amazon.co.uk: DIY & Tools