In this video, you'll learn about the visual differences between two thermostats from the same manufacturer—we'll be talking about a Danfoss thermostat. Thermostats with different purposes have the same marking: "25T65 EN 60730." Technicians are well aware of the difference between a single-chamber refrigerator thermostat and a double-chamber refrigerator thermostat. A double-chamber refrigerator thermostat has two adjustment screws inside this part, while a single-chamber refrigerator or freezer thermostat has only one. You can also see another visual difference by looking at the terminals. A single-chamber refrigerator or freezer thermostat is missing one terminal.