Hanwell 4000RHT Series

Temperature and humidity data loggers and radio transmitters

The 4000RHT series of data logger and radio transmitter units are well established as the most flexible units 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 the user’s requirements.


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Product Features

  • Data logging and radio transmitter formats
  • 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



  • Assists with national regulatory compliance
  • High performance technology with accurate probes
  • Low power radio for long distance transmission (Over 3km over open ground)
  • Up to 3 years battery life (depending on format of data retrieval)
  • Superior performance hardware with high accuracy sensors