The amp load meter is what the Intellitec EMS system uses to measure the load and shed loads if hooked to a 20 or 30 amp feed.
Do you have an EMS, what amperage system do you have.
I had a lightening strike hit my house, RV was plugged in and damaged the EMS system. I contacted M&M Electronics, a tech there walked me through troubleshooting and determined the system was shot. Bought a new one.
https://www.mmrvelectronics.com/