💡 KNACRO DC 6.5-100V 20A Energy Meter Volt Amp Tester Gauge LCD Display with Blue Backlight, Measuring Voltage Current, Built-in Shunt Review

Purchased specifically to monitor the 24V power supply used in the test setup. Thing works great - I'll get more for other test suites!

Two of these ordered in July 2019. Already a year in operation. One of them broke this morning. The display is dead. I hate owning things that just don't last long.

Used this meter to control a new LED power supply in my kitchen. The inner pair connects to the power supply and the outer pair goes to the load. I used my multimeter to check the accuracy to within 0.1 volts. This is acceptable for my setup. The display is off with no load connected. I only bought 3 pieces. For other projects, I'm glad it works.

I use this to test the DC output for my solar generators. This allows me to determine which devices can be used most effectively on a particular solar generator. This is a home made tester and this ammeter is its heart. This is priceless for me and also a necessity. The display is very accurate and easy to read. It has a lot of features and that's a lot for its capabilities. I think it's great value for money and give it 5 stars.

I bought this to attach to my portable solar panel to monitor voltage/wattage/amps when plugged into specific outlets (typically 12v for charging car batteries). I was concerned that it can hurt if the solar panel goes out, but it is powered both ways and can read the wattage rating either way. Even if the solar array has died and I convert it to a device instead, it still shows the power even if it's moving in the opposite direction. .I have no way of verifying the readings, so I can't judge…