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Hanwell RL4100 RH&T Transmitters

Hanwell RL4100 Relative Humidity and Temperature transmitters offer an accurate and convenient method of relative humidity and temperature monitoring and data logging.  As part of the Hanwell system, RL4100 RH&T transmitters feed into Hanwell Synergy data acquisition software, generally via an SR2 base station.  This wireless Hanwell system is commonly used in facility monitoring applications, including pharmaceutical and cleanroom monitoring systems requiring compliance to FDA CFR21 pt11 regulations.


Hanwell RL4100 transmitters are powered from a single, generic, 3.6V lithium “AA” size battery.  Battery life is typically up to 18 months.  Fluidic offer calibration solutions for all RL4100 sensors.  As part of a typical annual calibration, Fluidic can replace the battery at no extra cost.  Hanwell RL4100 RH&T transmitters are of lightweight ABS and polycarbonate construction.  Include order code Y119 with your order for a convenient and discreet wall mount bracket.


Hanwell RL4100 RH&T transmitters include an onboard memory capable of storing 100,000 datapoints.  Along with the LC display, this offers invaluable data backup in case of wireless signal loss.  Signal coverage is strongest in its class.  The standard 434.075MHz signal utilised by the Hanwell system has a line-of-sight travel up to 3km.  Other frequencies are available, Fluidic are able to compliment our offer with site surveys prior to system install.


Hanwell RL4100 RH&T Transmitters are available in the following models:

  • RL4114 with combination RH&T sensor
  • RL4115  with separate RH and temperature Sensors
  • RL4116 with combination RH&T sensor AND additional temperature sensor
  • RL4106 internal RH&T combination sensor


All temperature sensors are precision type, RH sensors are capacitive technology.  Fluidic offer a variety of sensor lengths and remote sensor cables to compliment the above transmitter varieties.


Fluidic are a recognised partner of Hanwell (Industrial division) for Scotland and the North of England. Our instrumentation engineers are product trained and able to help with instrument selection within the full Hanwell wireless system. Please call either office for more information (Glasgow 0141 641 5920, Warrington 01925 572401).





  • Download Hanwell RL4100 RH&T Transmitters Datasheet
  • Download Hanwell Probes Datasheet
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