🔌 KETOTEK AC Voltmeter Panel Mounting Meter AC80-300V Frequency Counter 45.0-65.0 HZ LED Display Voltage Volt Frequency Meter Tester Gauge Review

Product works as advertised. Very easy to read and easy to install. Note that the wiring to the amplifier ring and the power lines are very short! I don't understand why they can't make them longer and the end user can cut them to the right length. Trimming is easier than pulling the wire.

Voltage seems accurate and matches my calibrated Simpson 260. On the other hand, it takes over 30 minutes for the frequency to warm up and get a stable reading. Unfortunately, for a grid that registers 59.5 Hz, it is not accurate and does not register 60.0 Hz, which my other meter does. It's a pity that there is no calibration pot for it to be able to make it more accurate in the field.

I bought this to test the output voltage and frequency on my newly installed backup generator. I tested the unit by plugging it into a 120 volt household outlet powered by our utility company. The displayed frequency was 60.0/59.9 Hz. The voltage was 122 volts, which was confirmed by my digital fluke meter. This is actually more accurate than I had hoped. Very satisfied.

Installs 1 in a handy box with socket, for portable measurements only. 2 in the 5th wheel, 1 total supply 30a, 1 only for the water heater to answer whether it is on, whether it is heating. With , electric kettle, microwave and electric heating or air conditioning. Maximum power draw needs to be monitored when only a 20A power supply is available. They are inexpensive, easy to read, easy to install and appear reasonably accurate. It just eats from itself, it reads 0.03 amps. Two 1500 watt…

I bought this meter for an old generator that I wanted to restore. I installed this meter on the alternator to monitor voltage and frequency and to set the engine governor. It's impractical to test your portable generator with a multimeter every time you need it during a power outage, and it's nice to make sure its output is correct before you power it up and risk blowing up sensitive equipment . I have tested this meter for accuracy with my Fluke multimeter and it is very accurate. The hardest

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…

Bright display and easy to read font size. I installed an RV generator junction box so I can monitor AC Voltage and Hertz from both shore and generator power. I wired mine to stay on when the power is on. When the display lights up, I know the device is on. The pressure gauge is inserted into the bezel and snapped into place. Cut and file the perfect square hole for a professional look. After 3 months of continuous use, this device seems to be durable. The photo shows an old work box attached…

I bought two of these for my home generator. Each one controls a 120v leg of my 240v power supply from my generator to my home's main accessory panel during a power outage. In the picture, the generator is running with no load, so the current drawn is not measured in amperes. Installation was easy and the hardest part was cutting a square hole for them to fit. They also came with an induction coil already attached, so it's actually quite difficult to mess up the wiring. I'll let you know later…