Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts
Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts

Measured value: Temperature, Relative humidity, Counted values (dew point…), Two-state signal
Temperature sensor:
Measuring range: -30 to +105 °C
Accuracy: ±0.4 °C
Resolution: 0.1 °C
Humidity sensor:
Measuring range: 0 to 100 % RH
Accurac: ±2.5 % RH from 5 to 95 % at 23 °C
Resolution: 0.1% RH
Dew point:
Measuring range: -60 to +80 °C
Accuracy: ±1.5 °C at ambient temperature T <25 °C and RH >30 %
Resolution: 0.1 °C
Relay outputs:
Quantity: 2
Maximal voltage: 50 V
Maximal current: 2 A
Maximal power: 60 VA
Binary inputs:
Quantity: 3
Signal for binary inputy: dry contact, open collector or two-state voltage signal. Inputs are not galvanically isolated.
Minimum pulse duration on binary input: 500 ms
Voltage across open contact: < 3.3 V
Low voltage level: 0 to +0.5 V
High voltage level: +3.0 to +30 V
Operating temperature: -30 to +80 °C
Channels: 1x connectable temperature+humidity probe
Counted values: dew point, absolute humidity, specific humidity, mixing ratio, specific enthalpy
Acoustic alarm: from built-in beeper - switchable
Output: RS485
Range of humidity sensor temperature compensation: all temperature range
Available temperature units: degrees Celsius, degrees Fahrenheit
Communication protocol: ModBus RTU and Advantech ADAM compatible protocol
Power: 9-30 Vdc
Protection class: IP65 electronics; IP40 sensors
Dimensions:136 x 159 x 45 mm; length/diameter of external probe: 88/18 mm
External probe cable length: 1 meter
Weight: approx. 500 g
Included in delivery:
H3431
Instruction Manual
Traceable Calibration Certificate
FREE software TSensor for Configuring of the Transmitter