The TH114 Series delivers the features that matter most in a non-programmable thermostat: an easy-to-read backlit display, slim contemporary design and precise temperature control. Advanced temperature control ensures total comfort by minimizing temperature swings. ON/STANDBY switch enables thermostat shutdown at the end of heating season for added security. On-screen heating power indicator gives at-a-glance verification of power being used. Backlit display. Battery-free.