OT-ZW9300 Intelligent Temperature Controller

The product uses a digital temperature and humidity sensor and displays temperature and humidity values via a digital tube display. It includes fan and heater relay outputs, sensor fault indication, and RS485 communication. It is suitable for unattended substations.
Users can configure temperature and humidity upper/lower limits, display cycling mode, communication parameters, and more through keypad programming.
This product series features strong anti‑interference capability and high reliability, and complies with GB/T 15309‑1994 and GB/T 13978‑92.

Measurement Range	Temperature: –40.0°C to 80.0°C / Humidity: 1% to 99%
Accuracy	Temperature: ±2°C / Humidity: ±3.5%
Control Parameter Setting Range	Heating (temperature rise): 0.0°C to 40.0°C Forced‑air cooling: 0.0°C to 80.0°C Humidity control: 1% to 99%
Output Contact Capacity	AC 250V / 5A
Communication Interface	RS485, MODBUS‑RTU protocol
Auxiliary Power Supply	Voltage: AC/DC 220V Power consumption: ≤5W
Insulation Resistance	≥100MΩ
Power Frequency Withstand Voltage	Between power supply and accessible metal parts Between power supply and other terminal groups: 2kV / 1 min (AC, RMS)
Operating Environment	Temperature: –10°C to 55°C / Humidity: ≤95%RH, non‑condensing, no corrosive gases Altitude: ≤2500 m

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