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Differential Pressure Measurements

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EMS Compatible

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Live Data

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Hanwell Pro RL4509-DU Wireless Transmitter

Rugged Differential Pressure Transmitter

The Rugged Hanwell Pro unit offers LCD display and +/-100Pa differential pressure range.

Typical Applications

  • Operating Theatres
  • Cleanrooms
  • Pressure Cascade monitoring

Compatible with our wireless EMS monitoring system for real-time 24/7 data (anytime and anywhere) and instant alarm notifications.

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Key Features and Benefits


Instantaneous readings taken and displayed with a single button push


Superior performance hardware & high accuracy sensors


Easily accessible battery and USB socket


All loggers incorporate a wall bracket


Low power radio for long distance transmission (3km over open ground)


LCD display showing data readings and a battery life indicator


Complies with RoHS, EU directives and WEEE


Carries CE and UKCA Marking

Instrumentation Specification

Dimension (Excl. ancillaries):

160 x 90 x 50mm


350 grams

Power supply:

3.6V AA Lithium battery

Battery life:

Up to 22 months, dependent on conditions of use and instrument settings. This value was determined under the following conditions:
Tx Interval – 300 seconds.
Logging Interval – 15 Minutes
Ambient Temperature – 22°C +/- 3°C

Case Material:


Memory capacity:

50,000 readings per channel (unit will wrap when full)

System Accuracy (Transmitter Unit + Internal Sensor):

+/- 1.5 Pa over the range +10°C to +30°C

Transmitter Unit measuring range:

-100 to + 100 Pa

Transmitter Unit operating range:

0°C to +50°C (non-condensing RH environment)

Transmitter Unit storage temperature:

-40°C to +60°C


+/- 0.4 Pa

IP Rating:


Radio transmitter functions:

Radio frequency options:

A range of frequencies are available between 433-458MHz. Country specific regulations apply.

Radio power:


Radio range:

3km over open ground

Software required:

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

Software Compatibility:

EMS – Version 1.0.9 or higher

Hardware required:

CR3 – Controller
SR2 – Smart Receiver
REP – Repeater

The Hanwell EMS Software

The Hanwell environmental monitoring software (EMS) can be used with Hanwell Pro and Hanwell IceSpy hardware to provide a secure and flexible tool for comprehensive data collection, analysis and immediate alarm notification.

Validatable software
Specifically for the pharmaceutical sectors, we provide comprehensive IQ and OQ protocols and custom protocols, where required. Trained engineers and distributors are available for smooth validation protocol execution.

EMS assists with national regulatory compliance requirements
GxP Guidelines, HACCP, FDA 21 CFR Part 11, EU GMP Annex 11, and ISO 22000 food standards

Highlighted Features

checkmark One software platform for all Hanwell equipment.
checkmark Single or multi-user access for small, medium or large monitoring needs.
checkmark Collect and display data from multiple environmental applications.
checkmark Display quick overview of sites and/or sensor groups specified by individual users.
checkmark Access interactive graphs, tables and plan views for detailed data analysis.
checkmark System validation to organisation requirements with full supporting IQ & OQ protocols.
checkmark View real-time data 24/7.
checkmark Immediate system, email and SMS alarm notification to user-defined personnel.
checkmark Generate automated reports or access data immediately and easily via the system.
checkmark Access critical information on your local PC, via the company intranet or network and via the internet.
checkmark View and interact with data and settings from anywhere in the world using commercially available browser based formats.
Learn more about EMS
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Suitable Applications

The data loggers can be used for various applications within the life science and food & beverage industries.

Ellab Applications

Ellab provides a wide range of diverse products and solutions for most applications, all around the world.

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Suitable Accessories

Ellab offers a wide range of customizable fittings and essential accessories for our products. The items below are for use with this product:

Ellab Accessories

Ellab offers a wide range of customizable fittings and essential accessories for processes and studies within different industries.

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