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Temperature Range of -20°C to +60°C

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Live data up to 3km*

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Humidity Range of 0-100%RH

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LUX On/Off threshold 65

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Hanwell Pro RL4413-DU Wireless Transmitter

Rugged Precision RH/T sensor

The Rugged Precision RH/T & Light wireless transmitters use high accuracy RH sensors measuring 0-100% RH.

Temperature Range: -20°C to +60°C

Sensors are available separately – see below for compatible sensors

Typical Applications

  • Animal houses
  • Areas where the monitoring of periods of light and dark are required

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

Sensor Options

Key Features and Benefits


Combined temperature, humidity and LUX measurement


LCD display showing data readings and a battery life indicator


Superior performance hardware & high accuracy sensors


Easily accessible battery & USB socket


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


Complies with RoHS, EU & WEEE directives and carries CE and UKCA Marking

Instrument Specifications:

Dimension (Excl. ancillaries):

160 x 90 x 50mm


350 grams

Power supply:

1 x 3.6V AA Lithium battery

Case material:


Memory capacity:

33,000 readings per channel. Unit will wrap when full.

Clock accuracy (logging):

20 ppm at 25°C

IP Rating:


System Accuracy with Sensors:

See Datasheet

Transmitter Unit Measuring range:

Temp: -20°C – +60°C
RH: 0-100% RH non-condensing
Light: On/Off threshold 65 LUX

Transmitter Unit operating range:

-20°C to +60°C (non-condensing RH environment)

Transmitter Unit storage temperature:

-40°C to +60°C


0.1°C (temperature)
0.1%RH (humidity)

Battery Life:

Up to 8 months, dependent on conditions of use and instrument settings. This value determined under the following conditions:
Tx Interval – 300 seconds.
Logging Interval – 15 Minutes
Ambient Temperature – 22°C +/- 3°C

Radio Transmitter functions

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

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 Hanwell EMS
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Suitable Applications

The wireless data loggers can be used for various applications within the life science, medical and food & beverage industries.
When used with our High Range Conductivity and Temperature Sensor, the following application(s) are covered:

Ellab Applications

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

See all applications

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.

See all Accessories

Downloads and Related Articles

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Our EMS video to see how our comprehensive solutions work

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