Review on AP-770D TRMS Digital Multimeter: High Precision Tester for NCV Voltage, Current, Resistance, and More by Carl Watkins

The meter has many functions but the frequency counter doesn't work at all for me. I sent a question to the manufacturer about this the same day I received it, but more than a month has gone by without their support team responding. This thing is really SLOOOOOOW. You place the probes on something to measure and don't see a reading for 2-3 seconds. Should have paid the extra money and bought a Fluke instead. Spring. live and learn