Novus N321S Differential Temperature Controller – Dual Sensor for Solar Heating

The Novus N321S differential temperature controller is purpose-built for solar heating systems, delivering intelligent control based on temperature difference between two points. Supplied with dual NTC sensors and operating on 12–24VDC, it efficiently controls circulation pumps while protecting systems from overheating and freezing.

• Differential temperature control for solar heating applications

• Dual NTC thermistor inputs (2 sensors included) for accurate comparison

• Controls pump operation based on collector vs. tank temperature

• 12–24VDC power supply ideal for low-voltage and solar systems

• Relay output (SPDT, up to 16A) for direct pump control

• Built-in protection against overheating and freezing

• High accuracy (±0.6°C typical) with fine resolution (0.1°C)

• IP65 front panel for durability in industrial environments