I have 4, brand new MorningStar remote meters ( RM-1 ) in the box. Will meter the Sun Saver Duo, Sun Saver MPPT, and the Sure Sine by MorningStar.
Comes with 100 ft. meter cable. $ 50 apiece or all 4. $ 160.
The digital meter displays voltage, current, temperature, logged data, settings, alarms and error reporting for easy troubleshooting. Present, cumulative and maximums/ minimums are indicated. The LED's display battery level and operating state