ML4114 Temperature and Humidity Radio Transmitter

ML4114 Temperature and Humidity Radio Transmitter

Product code: ML4114-434.075

Part of the Hanwell Pro ML4000RHT Series, the ML4114 is a highly accurate temperature and humidity radio transmitter typically used within the heritage industry for it’s discreet design and has an additional temperature channel.

Instrument measuring range: -40°C to +60°C with external probe

Probes are available separately – see below for compatible probes


ML4114 Transmitter Datasheet

Humidity Meter for Museums

The ML4114 is a temperature humidity meter often used as museum logger for its discreet design. This reliable transmitter is used with our renowned Hanwell Pro wireless system for 24/7 monitoring and alarm notifications. 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.


✓ Combined temperature & humidity measurement
✓ LCD display with 50,000 data readings per channel & up to 2 years 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

• Dry storage
• Museum monitoring
• Ambient room conditions


For Instrument specification, please click on the Hanwell Pro ML4114 transmitter datasheet.


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

J140 – RH/T probe

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

Contact us to discuss your specific application, museum monitoring requirements or for more information about our humidity meters or museum logger range.

Manufactured by Hanwell | Ellab