Ranco Digital Two-Stage Temperature Controller - Wired

Now you can easily control two different temperature regulating devices. This all new, two-stage controller comes pre-wired with dual AC outlets. One outlet is controlled by one relay, the other by a second relay. The most common application is to use one stage to heat and the other to cool. This means you can simultaneously control a heater and a cooling device, never having to manually switch between heating and cooling modes. Find more videos like this on morebeer