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JTC-903
SNTOOM
Breakage protection – Automatically cuts output and stops heating when sensor is damaged or disconnected, protecting both equipment and products.
Stable under voltage fluctuations – High-power transformer ensures consistent performance even in unstable power environments.
Fast response & industrial-grade accuracy – High-precision display with 1.5 grade accuracy, alarm lights up immediately when temperature exceeds set range.
Removable casing – Easy to take apart for quick adjustments or maintenance, saves time on the job.
Side cooling vents – Built-in heat dissipation keeps the unit from overheating during long hours of operation.
Wide application range – Works for ovens, cold storage, factories, engineering setups, and other daily industrial scenarios.
Choose a dry, well-ventilated location. Make sure the mounting surface is stable and can support the unit's weight.
Connect the power supply to AC110V or AC220V 50/60Hz, and wire the K-type or J-type thermocouple to the input terminals as labeled.
Wire the relay output to the heating/cooling device according to your system requirements.
Power on the unit, set your desired temperature range using the front panel, and verify that the display responds correctly. Test the alarm by briefly exceeding the set value.
Always turn off power before installation or wiring to prevent electric shock. Do not exceed the rated voltage or current on the relay output. Hand-measured dimensions may have minor errors; use the size chart as a reference. Avoid installing in extremely humid or dusty environments. If the display shows maximum value unexpectedly, check the thermocouple connection first. Do not disassemble the internal circuit board – this may affect accuracy and void support.
The JTC-903 is a practical temperature controller for ovens, cold storage, factories, and engineering setups. It delivers stable, responsive temperature regulation without unnecessary complexity.
One standout feature is breakage protection. If the sensor gets damaged or disconnected, the unit instantly stops heating and shows a maximum reading — protecting both your equipment and products.
The high-power transformer handles voltage fluctuations well, so performance stays steady even when the power supply isn't perfect. The removable casing makes maintenance quick and tool-free, and side cooling vents prevent overheating during long runs.
Fast response, industrial-grade accuracy, and an alarm that lights up when temperature exceeds your set range — all in a simple, reliable package. It works with K-type or J-type thermocouples, runs on 110V or 220V, and fits a standard 92×92mm panel cutout.
Overall, the JTC-903 is a solid, no-nonsense choice for anyone who needs accurate temperature control without the hassle.
