RL4502/9 Differential Pressure radio transmitter

Differential Pressure Transmitter

The RL4502 (+/-1250Pa) and RL4509 (+/-50Pa) differential pressure radio transmitter units are fitted with a variety of differential pressure ranges. Contact us today for your free quotation and signal strength test (we can prove ours to be unrivalled) or to discuss your specific temperature monitoring requirements and application.

These products are not available to purchase online due to the radio system requirement, please contact us for information and to discuss the product variable options most suitable to your application:

  1. RL4502-434.075 – DP Radio Transmitter with +/-1250Pa Range
  2. RL4509-434.075 – DP Radio Transmitter with +/-50Pa Range

Instrument Specifications

Dimensions: 110 x 80 x 35mm
Weight: 200 grams
Power Supply: 1 x 3.6V AA Lithium batteryThe-IMC-Group-British-Made

Technical Specification

Click on downloads to view the technical data sheets and specifications for these products.

Radio Transmitter FunctionsSignal-strength-message

Frequency Options: A range of frequencies are available between 433-458MHz. Country specific regulations apply.
Radio Power: 10mW
Radio Range: 3km over open ground 
Battery Life: Up to 2 years (dependent on conditions of use and instrument settings)


Contact us today for more information about this product.


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Software Required:
W900 – Standard Hanwell EMS Software Package
W906 – Validated Hanwell EMS Software Package
*See EMS datasheet for further options

Hardware Required:
SR2 – Smart Receiver
CR2 – Controller
REP – Repeater

Y119 – Wall mounting bracket
88706 – AA Lithium battery