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RL4509 differential pressure Transmitter

The RL4509 (LCD display) rugged differential pressure wireless logger unit is fitted with a high accuracy differential pressure sensor. 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.

Radio Transmitter with +/-100Pa Range

Wireless Temperature Transmitter

The RL4012 (dual channel) wireless temperature transmitter has LCD display and provides an accurate temperature range of -20°C to +60°C which is extended to -40°C to +100°C with external thermistor probes. This unit also comes with a door switch included. Use this wireless temperature transmitter with our premium Hanwell Pro wireless system for a complete and comprehensive solution to wireless temperature monitoring 24/7, contact us today for your free quotation and signal strength test or to discuss your application.


✓ Dual channel Thermistor instrument
✓ Door ajar/open event logs
✓ LCD display with data readings & battery life
✓ 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
✓ Carries CE Marking

Typical Applications

• Fridges
• Freezers
• Chillers


For Instrument specification, please click on the Hanwell Pro RL4012 transmitter datasheet.


This product is to be used in conjunction with HanLog software or the Hanwell EMS software for comprehensive centralised monitoring.

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