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General
The Banner Engineering M12FTH3Q is a digital temperature and humidity sensor designed for continuous environmental monitoring and industrial condition-monitoring applications. It measures ambient temperature and relative humidity while also providing dew point information, helping monitor environmental conditions around machinery, electrical enclosures and sensitive equipment.

Featuring an RS-485 communication interface with Modbus RTU protocol, the M12FTH3Q allows temperature, humidity and dew point measurements to be transmitted to PLCs, industrial controllers, data acquisition systems and monitoring gateways.

The sensor features a compact M12 threaded metal housing, a 5-pin M12 connector and IP67-rated construction. With selectable standard and low-power supply options, it is suitable for industrial environmental monitoring, automation and remote sensing applications.

Features
- Digital temperature and relative humidity measurement.
- Dew point measurement capability.
- Temperature measurement range: -40°C to +85°C.
- Relative humidity measurement range: 0–100% RH.
- RS-485 serial communication interface.
- Modbus RTU communication protocol.
- Temperature and humidity sampling rate of approximately 5 seconds.
- Temperature resolution: 0.1°C.
- Humidity resolution: 0.1% RH.
- Selectable 12–24 V DC or 3.6–5.5 V DC low-power supply.
- Compact M12 threaded metal housing.
- 5-pin M12 male connector.
- IP67 ingress protection.
- NEMA 4X environmental rating.
- LED indicators for power and serial communication.
- Suitable for industrial environmental monitoring and condition-monitoring systems.

Key Specifications
- Make: Banner Engineering
- Model: M12FTH3Q
- Part Number: 25898
- Series: M12 / Sure Cross
- Product Type: Digital Temperature and Humidity Sensor
- Measurement Parameters: Temperature, Relative Humidity and Dew Point
- Temperature Measuring Range: -40°C to +85°C
- Temperature Resolution: 0.1°C
- Temperature Accuracy: -40°C to 0°C: ±0.6°C; 0°C to +60°C: ±0.4°C; +60°C to +85°C: ±1.2°C
- Relative Humidity Range: 0–100% RH
- Humidity Resolution: 0.1% RH
- Humidity Accuracy: ±2% RH at 25°C; ±3% RH at 0°C to +70°C and 10–90% RH; ±7% RH at 0°C to +70°C and 0–10% or 90–100% RH
- Sampling Rate: Approximately 5 seconds
- Communication Interface: RS-485
- Communication Protocol: Modbus RTU
- Baud Rates: 9,600 / 19,200 / 38,400 bps
- Default Baud Rate: 19,200 bps
- Supply Voltage: 12–24 V DC or 3.6–5.5 V DC low-power option
- Current Consumption: Approximately 45 μA during default sensing; 4 mA during active communication
- Electrical Connection: 5-pin M12 male connector
- Mounting Thread: M12 × 1
- Housing Material: Metal
- Protection Rating: IP67
- NEMA Rating: NEMA 4X
- Operating Temperature: -40°C to +85°C
- Shock Resistance: 30 G, 11 ms
- Vibration Resistance: 10–55 Hz, 0.5 mm peak-to-peak

FieldInstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888
WhatsApp: +94 71 388 7888
Email: info@fieldinstruments.lk