Temperature and RH Transmitter:

Description :

The STYRAX “Temperature and RH Transmitter” has been specially developed keeping process measurement requirements of CLEAN ROOMS in Pharmaceutical industries. RHT105 is a high-performance 4-wired Relative Humidity and Temperature Transmitter. Its relative humidity and temperature transmitter is available in surface mount, duct mount and remote sensor versions. This transmitter is accurate to 1.5% for relative humidity and within 0.3 °C for temperature. RHT105 transmits two isolated output signals to other devices such as a Programmable Logic Controller (PLC) or Solid-State Relay (SSR). Signal isolation protects your devices and machines downstream of our instruments from damaging fluctuations in the input signal. The RH+T transmitter is user programmable by a PC, connected via Configuration software by STYRAX.

Features :

  • Advanced Microcontroller based process measurement.
  • Software programmable measurement range settings.
  • 5-point calibration for Temperature.
  • 5-point calibration for RH.
  • High input impedance.
  • Software calibration – No trim pots.
  • PC programmable.


Input Sensor Type

RH Capacitive sensor.
Temperature Semiconductor (Band gap) sensor.

Output Type

Output1 4-20mA/0-10VDC.
Output2 4-20mA/0-10VDC


RH 0 – 100% Non-condensing.
Temperature 0 to 50°C.


Temperature 0.3°C for Temperature.
RH 1.5% RH for 10-90% and 2% for remaining.

Operating Voltage




Sensor Tube



Sintered bronze.


IP65 except sensor tube.
Model No. Output No. of Outputs Dimensions
RHT105A 4-20mA 2 80 X 82 X 55
RHT105V 0-10VDC 2 80 X 82 X 55


Styrax Instruments India Pvt. Ltd., has been one of the prominent manufacturers and suppliers of Process Measure and Control Systems, Clean room Interlocking Systems, Automation Solutions and hi-tech security and access control systems.

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STYRAX Instruments India Pvt Ltd.
H.No: 2-77, Near Gajularamaram Chowrastha,
Gajularamaram, Hyderabad - 500055.
Telangana, India.
Mobile :
+91 9989222456 (Director Sales)
+91 9640447474 (Head Operations)
+91 9248068489 (Asst. Manager Sales)
+91 9248068487 (Coordinator Sales)