Heater kits are designed to keep control panels warm at low temperatures, prevent LEDs from becoming sluggish and help devices stay visible. Both 12-volt and 24-volt models are easy to install and highly effective, the self-adhesive pads operate with enclosed covers. STI Heater Kits operate in conjunction with enclosures such as the STI Stopper II® and Universal Stopper® to protect and help expensive electronic components remain operable in low temperature areas.