JLD404W Power meter measuring incorrect voltage

[Drummer_john]

I recently purchased 3 of these DC Watt meters. I have connected them as described in the manual and they appear to be operating. The Voltage reading however is 5X what it actually is. @1V the meter reads 4.8V and @ 5V the meter reads 24.7V. The Ampere reading is accurate. Is there a way to calibrate this meter? I have opened the case searching for some trim pots and see none.

Thanks in advance for the help.

[Drummer_john]

I figured it out. I had to go into UPvH and change it from 500 to 100. The manual doesn't explain this very well.

Hopefully this help some one in the future.

John