The UNH DNP lab has a large blue equipment oven, largely used for quickly curing epoxies.
To set an over-temperature protection, used to ensure the temperature remains below a certain amount, turn the knob on the bottom-right labeled "Over Temperature Protection". This is a useful safety feature and should always be set before turning on the oven.
To set the desired temperature, turn the knob on the bottom-right labeled "Main Control" until it matches said temperature. For curing DP-190 epoxy, after letting it set for 24 hours to dry it goes in the oven at 200 F (93 C) for two hours.
Finally, flip the center "Main" switch to "On" to run the oven, and "Off" to turn it off.