M12 and M8 circular connectors provide a safe and reliable connection for temperature sensors and have revolutionized the world of industrial automation and connectivity...A customer in the Plastics Industry requested that Tempco incorporate M12 connectors into various Resistance Temperature Detector (RTD) sensors such as probe assemblies and melt bolt assemblies.

The connectors for these particular assemblies have 4 pins for a 4-wire RTD circuit.
Visit the Tempco Blog for complete details, images and a list of additional design features of this product.