Watchmon4 hardware guide and pin assignment

BMS central processor for watching cell monitoring units and provides supervision functions. The WatchMon4 supervisor is able to notify remote systems (inverter/charger) of the battery state and when required, trigger evasive action to prevent damage to battery pack.

4.0-4.2 Pin Assignment

New 4.3 - 4.4 Pin assignment

4.0-4.2 Pin Assignment

New 4.3 -4.4 Pin assignment

Remote Communication

  • WiFi connectivity (normal, disabled, or read only)
  • Can-Bus communication port to remote systems
  • Modbus RS485 link allowing connectivity to inverters without canbus
  • Optional blue-tooth connectivity (future enhancement)

Built-in input and output control

  • Two (2) onboard FET outputs 4A with 8A inrush 
    • e.g. remote circuit breaker trip + fan
  • Two (2) onboard input
    • e.g. circuit breaker trip sensor

Added features and I/O with Expansion board 

Provide inputs and outputs terminals to an extend range of features from a WatchMon.  Not for individual sale, sold only as part of a kit.

Key features

  • 2 relay outputs 5A/30VDC
  • 2 Solid State relay outputs  2A/60VDC
  • 6 digital switched mosfet outputs 48V (3A continuous 6A peak)
  • 2 analogue 5v inputs
  • 2 digital inputs (positive sense)
  • 2 digital inputs (negative sense)


Did this answer your question? Thanks for the feedback There was a problem submitting your feedback. Please try again later.

Still need help? Contact Us Contact Us