[rohrmann]

Behind the black cover that has the two rubber button covers there are two thermostat/Hi-limit devices. The one on the left is the one for the 120 volt side and the one on the right is for the 12 volt controlled gas side. So, both function with electric to operate. On both, the actual thermostats are on the bottom and the resetable Hi-limit switches are the parts that have the buttons and these are positioned behind the rubber covers.