ML4114: The Highly Accurate Temperature and Humidity Radio Transmitter

The ML4114 is a temperature humidity meter that features a discreet design, and hence it is often used for IMC’s heritage customers. The transmitter is reliable and is used with IMC’s popular Hanwell wireless system for continuous monitoring and alarm notifications.

Customers can contact the company for free quotation and signal strength test (we can prove ours to be unrivaled) or to discuss their specific temperature monitoring requirements and applications.

Instrument Specifications

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Dimensions 110 x 80 x 35 mm
Weight 200 g
Power Supply 3.6 V AA Lithium battery
Memory capacity 100,000 readings


Technical Specification

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External Temperature Probe J140 EE07-02 RH/T probe PT1000 (Tolerance Class A) (Y421-3 RH remote lead 3 m or Y421-5 RH remote lead 5 m) – Probe sold separately
Dimensions 11.8 mm x 83 mm
Range -40°C to +80 °C
Accuracy ±0.1 °C at 20 °C (see Temperature chart below)
Resolution 0.1 °C

Humidity Probes Capacitive Polymer
Recommended Range 0-100%RH non condensing
Accuracy ±2%RH (0-90%), ±3% (90-100%)
Temperature dependence < (0.025 + 0.0003 x RH) [ ]
Resolution 0.1% RH


Radio Transmitter Functions

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


This product can be calibrated to customers' specifications.

N.B Instrument operating range -20 °C to +65 °C in a non-condensing RH environment

System Components

Software Required

W700 – Standard Synergy Software Package
W706 – Validated Synergy Software Package

*See Synergy datasheet for further options

Hardware Required

REP – Repeater
SR2 – Smart Receiver
CR2 – Controller


Y119 – Wall mounting bracket
88706 – AA Lithium battery

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