A temperature controller, also known as a multi-point temperature controller, is a device or system used to regulate and control the temperature at multiple points or locations. It is designed to monitor and regulate the temperature in multiple zones or areas simultaneously.

A multi-point temperature controller generally consists of multiple temperature sensors placed in different locations or zones together with a central control unit. Temperature sensors continuously measure the temperature at appropriate points and transmit the data to the control unit.

Based on the received temperature data, the control unit analyzes and compares the actual temperatures with the desired set values. Then activate the appropriate heating or cooling elements, such as electric heaters or cooling fans, to maintain the temperature at the desired level in each zone.

This type of temperature controller is commonly used in a variety of applications including industrial processes, environmental chambers, HVAC systems and laboratories where precise temperature control is required in various locations.