ML4109 Temperature and Humidity Outdoor Data Logger

Outdoor Temperature Data Logger with Humidity

Part of the Hanwell Pro ML4000RHT Series, the ML4109 outdoor data logger combines accurate temperature and humidity measurements using
highly accurate EE07 probe protected with external solar/ rain shield. Alternatively, see our ML4109 wireless outdoor temperature data logger with humidity for seamless collection.


✓ Combined temperature & humidity measurement
✓ Superior performance hardware & high accuracy sensors
✓ Easily accessible battery & USB socket
✓ Logger memory capacity of 50,000 readings per channel
✓ Up to 3 year battery life
✓ Complies with RoHS, EU & WEEE directives
✓ Carries CE Marking

Typical Applications

• Outdoor comparative data


For Instrument specification, please click on the Hanwell Pro ML4109 data logger datasheet.

For probe specification, please click on the Hanwell probes datasheet.


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

Compatible products

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

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Contact us today to discuss your application, our friendly staff would be happy to help you. Alternatively, look at our range of outdoor data loggers here.

Manufactured by Hanwell | Ellab