ML4000 RHT Series of RH/T Data Loggers

Humidity Data Loggers

The ML4000 RHT series of data logger units are well established as the most flexible humidity sensors on the market today. Each unit has been designed to be compatible with a wide range of temperature and humidity probes to provide accurate and reliable measurement specifically selected for conservation requirements.

Additionally, depending on the format required by the user, temperature and humidity data can be downloaded directly to a local PC using a USB cable for automatic notification and detailed analysis.

The units are powered by a single 3.6 Volt AA Lithium battery, which can be replaced by the user as and when required. The battery life will be dependent on the method of data collection, but can last up to 3 years, with notification of when a change is required.

Product Features

  • British Made design and manufacturedThe-IMC-Group-British-Made
  • LCD display with data readings and battery life
  • Logger memory capacity 100,000 readings
  • Easily accessible battery and USB socket
  • Supports (optional) hidden wall brackets
  • Complies with RoHS, EU directives and WEEE
  • Carries CE Marking
  • Up to 3 years battery life (depending on format of data retrieval)
  • Superior performance hardware with high accuracy sensors


  • Assists with museum accreditation
  • High performance technology with accurate probes
  • Designed for discreet monitoring
  • Ensure comfortable environment for visitors
  • Prevent damage to organic materials
  • Supporting British Engineering and Manufacturing Industries

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