Warmup’s Commbox-600 (five zone) and Resibox-240 (four zone) snow-melting controllers are plug-and-play controlled power distribution panels for frost protection and ice- and snow-melting applications. Each product includes automatic power, sequencing that allows for sharing of the minimum required power supply, multiple snow sensor inputs, integrated electronic controller with backlit display and an adjustable hold-on time to keep the outputs to the zones active to ensure complete snow melting.