DC Bus Monitor

Wireless DC Bus Monitor monitors all important DC Bus parameters.

DC Bus voltage is measured during charge and discharge periods to give accurate information about UPS’s behaviour in both states.

Although a charger is designed to provide DC voltage, it also generates a small amount of AC Ripple in the signal, which is not very dangerous by itself, but may cause problems in combination with other factors, like starting the chain reaction that can lead to a thermal runaway.



  • DC Voltage Measurement
  • Range: 30-650VDC
  • Resolution: 0.1VDC
  • Accuracy: 1% or better
  • AC (True RMS) Voltage Measurement
  • Range: 0-30VAC
  • Resolution: 1mVAC
  • Accuracy: 1% or better
  • Linearity: 0.1% or better
  • Power Supply
  • Powered directly from DC bus (30-650VDC)
  • Wireless Communication
  • Frequency ISM Band - 2.4GHz DSSS
  • Range indoor >100m
  • Range outdoor >600m
  • RF approvals FCC, ETSI
  • Operating Temp.
  • -4°F to 158°F (-20°C to 70°C)
  • Humidity
  • 10-99%, non-condensing
  • Storage Temp.
  • -40°F to 176°F (-40°C to 80°C)
  • Key Attribute
Passive charge balancing is a unique feature that the Wireless DC Bus Monitor provides in conjunction with the Wireless Battery Monitor. All batteries of the UPS can have equal charge regardless of the fluctuations of the charger output which is imperative for maintaining their health and keeping the UPS reliable.
  • Enclosure
  • ABS
  • Dimension and Weight
  • 2.5” x 1.6” x 0.5”
  • (64mm x 41mm x 13mm)
  • 1.2oz (35g)


Download product specification in PDF