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BLE Temperature and Humidity Sensor

The WTH300 is used to monitor temperature and humidity. It can be utilized in cold chain logistics, asset monitoring and other environmental management applications. It works with Queclink BLE trackers to collect environmental data.



  • Specifications
Dimensions70.6 × 38 × 17.8mm 2.78’’(L) × 1.50’’(W) × 0.70’’(H)
Weight43g (1.52oz
Operating Voltage2.7V ~ 3.3V DC
Operating Temperature-40℃ ~ +70℃
Carrier Frequency2.4 GHz, supports BLE 4.2 protocol
Transmission DistanceMax 100m (open area)
Sensitivity-40 to +4 dBm
Temperature MeasureRange: -40℃ ~70℃ Accuracy: 10℃ ~50℃ , error: ±0.5℃ Accuracy: ≤10℃ or ≥50℃ , error: ±2℃
Humidity MeasureRange: 0%RH~100%RH Accuracy: 0%RH~90%RH, error: ±2.5%RH Accuracy: ≥90%RH, error: ±3.5%RH
Sampling PeriodOnce per second
LED IndicatorIndicates pairing or on/off status or low battery alarm
Transmission ModePeriodic data broadcast (100ms to 10s)
Battery LifeTwo FR03 Li-Fe batteries, 1250mAH, over 3 years lifetime
Low Power AlarmLED turns to red and Indicated in the data sent to the receiver