Yes, they do exist.
Automatic Temperature Control.
the blend door is jammed.
hypothalamus
Using the remote control, you can set the fan to come on automatically when the room reaches a certain temperature.
Cars with an Automatic Temperature Control system have a thermometer in the dash console with little vents to allow air to come in. The thermometer temperature reading is then used to control the fan speed and also the air mix (temperature) to match the temperature selected....
Blend door actuator failure.
Victor Chesney Miles has written: 'Thermostatic control' -- subject(s): Automatic control, Temperature control, Thermostat
The temperature sensors for automatic climate control are located at the air intake for recirculation of cabin air under the dashboard.
blend door is jammed.
The blend door is jammed
It is 90 degresse the highest and lowest it 68
Spa Control is a company based out of China. They offer electrical control sensors, with temperature readouts, automatic shut off, and security locks for swim spas.