RL4111/2 Temperature and Humidity Transmitter

RL4111/2 Temperature and Humidity Transmitter

Product code: RL4111-434.075

Part of the Hanwell Pro RL4000RHT Series, the RL4111 and RL4112 RH/T radio transmitters use high accuracy RH/T probes.

Instrument measuring range:

RL4111 – Range -40°C to +60°C
RL4112 – Range -50°C to +100°C

0-100% RH

Probes are available separately – see below for compatible probes

RL4111_2 Datasheet

Accurate wireless RHT logger

Part of the Hanwell Pro RL4000RHT Series, the RL4111 and RL4112 are accurate wireless RHT loggers for precise temperature and humidity measurement. These reliable transmitters are used with our renowned Hanwell Pro temperature humidity monitoring system for 24/7 data and instant 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.

Sensor Options

RL4111 – Range -40°C to +60°C
RL4112 – Range -50°C to +100°C


✓ 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
• Ambient room conditions


For Instrument specification, please click on the Hanwell Pro RL4111 transmitter 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

Contact us for more information about our accurate wireless RHT logger or other temperature and humidity monitoring solutions.

Manufactured by Hanwell | Ellab