Call a Specialist Today! 855-958-0756

Vertiv Liebert TW420 and THW420
Environmental Sensors

Vertiv Liebert TW420 and THW420

Veriv Products
Liebert Liebert Environmental Sensors
Vertiv Liebert TW420 Environmental Sensor for Temperature
Contact us for Pricing!
Vertiv Liebert THW420 Environmental Sensor for Temperature and Humidity
Contact us for Pricing!

Provides a communication interface from Liebert devices to a Building Management System or SiteScan SiteLink modules for remote monitoring and control via Modbus RTU or Liebert proprietary protocol.

Best Suited For:


  • Helps to avoid potentially hazardous problems
  • Easy to install
  • Transmission over long distances without degradation of the 4-20 mA signal


  • TW420 sensor monitors temperature;
  • THW420 sensor monitors temperature and humidity
  • Communicate to the Liebert Universal Monitor
  • Provides 4-20mA signals
  • Monitored temperature range of 45°F to 96°F (7°C to 35°C)
  • Monitored humdity range of 0 to 100% relative humidity

Infrastructure Management

Managing the Data Center Gap