Originally the seller sent the wrong device, voltmeter, I sent it back and received the correct voltmeter. I installed it and connected it to a balanced isolation transformer to control the output load. The voltage reading seems correct. I don't have the ability to independently verify the current readings. The manufacturer claims that the device runs on both 50 and 60 Hz AC power. I suspect a little that this could be true for both frequencies. However, I wasn't expecting a lab quality meter and am happy with its performance. It was the ideal size for a 1U NEMA rack panel.
VIVREAL 4 In 1 Stud Finder Wall Scanner With LCD Display - Center Finding Beam Finder And Sound Warning For Wood, AC Wire, And Metal Studs (Black/Silver)
24 Review
Xiaomi iHealth Meter Thermometer White
24 Review
Room temperature and humidity sensor Aqara Temperature and Humidity Sensor white
25 Review
Cable tester BENETECH GM60
15 Review
Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 Review
π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review
β Stainless Steel L-Square, Size 3-Inch x 4-Inch, Zona 37-434
8 Review
Triangle Group TR918 225/45 R18 95V summer
61 Review