What type of sensors do all storage water heater thermostat controls utilize?

Storage water heater thermostat controls typically use rod and tube sensors, which are designed to measure the temperature of the water in the tank effectively. These sensors consist of a metal rod that is positioned in the water, which allows it to accurately sense the temperature. As the water heats up or cools down, the sensor detects these changes and communicates with the thermostat to regulate the heating element accordingly. This ensures that the water temperature remains within the desired range, providing efficient heating and preventing overheating or excessive energy consumption.

Other types of sensors listed in the choices do not provide the same specific functionality in the context of water heater thermostats. Some may be used in different applications but are not common in storage water heater control systems. Understanding the specific application of rod and tube sensors in this context is essential for recognizing their effectiveness and reliability in maintaining water temperature.