Extra Heater relay control

[hedrot]

Hi Aaron. I am currently using the Dew heater and Fan device control to control relays for these devices. My camera is mounted above the housing which has the RPi (Almost tow different compartments). I need to have a heater in the housing space to keep the temperature positive during winter. I just completed a winter and the heat generated by the RPi alone kept the housing temp 10 degrees above the outside temperature which was -20 for long periods in winter here in Norway. The posibility to additionally control a small heater would really help. Do you have any other suggested solution?