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Sentry-1202W2 Battery Monitor

Sentry battery monitor for 24V systems with high capacity 2V cells

Sentry series compact battery monitors combine superior data quality and flexible installation to address cell site applications. Compatible with Battery Analyzer software, MyBattery Platform™ or other Telemetry centralized management system with standard Modbus communication, Sentry monitors can be utilized for virtually every remote telecom application.

  • Onboard Battery State of Health (SOC) analysis.

  • Reliable Remaining Runtime prediction.

  • Compatible with MyBattery Platform™ for large scale deployment

  • Easy integration to existing site management software

Sentry 1202W2 is specifically designed for 12x2V applications which are popular in 24V telecom power systems.

  • Individual high resolution Internal Resistance / Conductance online measurement for 2V cells
  • Individual inter-cell connection resistance to further improve IR accuracy
  • Proprietary technology to monitor float current without external sensor
  • Ethernet and Wireless M2M compatible, instant drop-in with no field configuration
  • Battery Analyzer and MyBattery Platform™ compatible
  • Modbus RTU or Modbus TCP for integration for 3rd party software
  • Effectively priced for large scale applications


Sentry-1202W2 Datasheet

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Sentry-1202W2 Battery Monitor



  1. Each Sentry-1202W2 monitors 1 string of 12x2V.
    If a system has multiple strings, order one unit for each string.
    Each unit comes with 2 temperature sensors for ambient and pilot temperature.
  2. Unit comes with onboard Ethernet DTU. If external wireless DTU is selected, an activated SIM card (GSM) is needed.
  3. Order O-ring leads, specify 6mm (1/4"), 8mm(5/16") or 10mm(3/8"). 
  4. Order current sensor if needed. Default window size: 15mmx20mm, close loop 300A (peak current 600A). Other size/range and split-core sensor may have longer lead time.
  5. A HMI touch display is recommended for field service. 
  6. Optional 12-conductor 20AWG cable, calculate the length for order.


Battery Analyzer Software license comes with hardware order.