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Multiple Parameters Available

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EMS Compatible

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Live Data

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Hanwell Pro RL4803/4 Wireless Transmitter

Single & dual digital inputs

Part of the Hanwell Pro digital wireless units are typically used for door, machine, pump or level monitoring internally or externally. Each unit includes a steel bracket for mounting purposes.

Below are multiple applications that the Transmitters can be used for:

  • Production Machine Downtime Monitoring
    Receive alerts when critical equipment is off-line for within any predetermined period.
  • Pump Monitoring
    Receive notifications when the pump stops longer than a predetermined period.
  • Level Monitoring
    Monitor the state of level in tanks, reservoirs, rivers and much more.
  • Door Monitoring
    Monitor and alarm critical doors on fridges within cold storage distribution centers.
  • Refrigeration Plant Monitoring
    Predictive maintenance for refrigeration systems. Receive early warning following breakdown rather than waiting for high-temperature alarms. This can gain several hours allowing for repair work to be carried out prior to goods spoilage.

Relevant Products

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Smart Receiver
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Signal receiver & processer
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Repeats another 3km (over open ground)
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Key Features and Benefits


Digital single/dual input for pump, machine, level and door alerts


Up to 18 months battery life


Easily accessible battery for replacement by the user, when required


Superior performance hardware & high accuracy sensors


Includes a steel wall bracket


Low power radio for long distance transmission


Complies with RoHS, EU directives and WEEE


Carries CE Marking

Instrumentation Specification


150 x 88 x 50mm


485 grams

Power supply:

3.6V AA Lithium battery

Battery Life:

Up to 18 months (dependent on conditions of use and instrument settings)

Cable length:

3m with bare ends (as shown in image)

Case Material:


Instrument operating range:

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

Instrument storage temperature:

-40°C to +60°C

IP Rating:



Volt free

Maximum load capacitance:


Wetting current:

Min 1mA

Measuring frequency:


Transmit Interval:

User programmable 30s-300s on a state chang

Radio transmitter functions:

Radio frequency:

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

Radio power:


Radio range:

Up to 3km over open ground

Software required:

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

Hardware required:

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.

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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