Product details:
The CAMPLUX mini-tank water heater is equipped with an adjustable thermostat that once set will automatically control water temperature.The red indicator lamp remains illuminated while the water is being heated. When the water heater is not being used for an extended period of time and there is a risk of freezing, either unplug and drain the water heater or turn the thermostat knob to the sonwflake position to guard against freezing.