Wireless Temperature and Humidity Transmitter | Temp Assure CTH900B

Overview of the CTH900B Wireless temperature and Humidity Transmitter with Optional RTD Input

A multi-sensor wireless temperature and humidity transmitter designed for environments requiring ambient temperature, and humidity.  It has an additional external Pt100 three wire temperature input. So it can measure two temperatures and a humidity in one device.

Key Features

• Ambient temperature accuracy: ±0.2 °C (certifiable)
  • Humidity sensor accuracy: typically ±2–3 % RH (sensor dependent)
  • External Pt100 temperature input via 3-wire jack socket
  • External temperature range: –50 °C to +250 °C
  • Glycol bottle response to temperature changes
  • Wireless range: 100–300 m open, 75–125 m indoors, 50–75 m in metal refrigerators
  • Bi-directional communication
  • 1–3 year battery life
  • Up to 1 year of onboard data buffering when offline
  • Compact, fridge-compatible enclosure

Technical Specifications

Internal temperature range: –40 °C to +85 °C.
• External temperature range (Pt100): –50 °C to +250 °C.
• Humidity range: 0–95 % RH (non-condensing).
• Resolution: 0.1 °C / 0.1 % RH.
• Wireless: long-range, gateway-compatible.
• Power: internal lithium battery.

Use Cases

Ideal for environments requiring compliance with temperature and humidity monitoring standards.

• Vaccine refrigerators and cold rooms.
  • Ambient environmental monitoring.
  • Food processing and preparation areas.
  • Aged-care and healthcare facilities.
  • Combined ambient and product temperature monitoring.

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