STC-1000HX temperature controller features cooling and heating modes with automatic switch, temperature unit switch between Celsius and Fahrenheit, temperature control by set-point and differential, temperature calibration, cooling output protection delay, sensor fault alarm and other functions. The controller reserves an interface for -485 communication function for further connection to an IoT module which makes remote control available. DIY Design Use Wiring Diagram, a more economical and practical choice. Stable and reliable, flame retardant ABS plastic shell up to V0 level, passed EMC anti-interference test. Audible and visual alarms when temperature exceeds temperature limit or when sensor error occurs. Allows setting of parameters: temperature calibration, refrigerating control output delay protection, Celsius display. Saves set parameters when power is off. Temperature range: -55 to 248 Sensor probe: 2m Color: Black Material: Plastic Package Contents: 1 x Temperature controller Note: The above package content only, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3cm.