ML4109 RH/T Outdoor Radio Transmitter

Wireless outdoor temperature sensor

The ML4109 is a wireless outdoor temperature sensor with humidity monitoring using onboard sensors monitoring between -40°C to +60°C and 100%RH. 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 unrivaled) or to discuss your specific temperature monitoring requirements and application.

Instrument Specifications

Dimensions: 150 x 88 x 50 mmThe-IMC-Group-British-Made
Weight: 485 grams
Power Supply: 3.6V AA Lithium battery
Case Material: ABS & PC
Memory capacity: 100,000 readings
IP Rating: IP65

Technical Specification

Internal Temperature Probe: EE07 probe (11.8mm x 83mm)
Range: -20°C to +60°C
Accuracy: ±0.1°C between -10°C to +40°C,  ±0.3°C Outside these extremes
Display resolution: 0.1°C
External Temperature Probe: Pt1000 (tolerance class A)
Range: -40°C to +80°C
Accuracy: ±0.1°C at 20°C
Resolution: 0.1°C
Humidity Probes: Capacitive Polymer
Recommended Range: 0-100%RH non condensing
Accuracy: ±2% (0-90%), ±3% (90-100%) 

Radio Transmitter FunctionsSignal-strength-message

Frequency Options: A range of frequencies are available between 433-458MHz. Country specific regulations apply.
Radio Power: 10mW
Radio Range: 3km over open ground 
Battery Life: Up to 18 months

This product can be calibrated to your specifications, contact us for further details.
N.B Instrument operating range -20°C to +65°C in a non-condensing RH environment

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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