Review on 🔧 Timorn Tachometer: Waterproof Hour Meter for Small Engine - Ideal for Chainsaw, ATV, Motorcycle & UTV Engine (Black) by Jeff Shapiro

Ordered 2 pieces for 2 new snow throwers. I think/understand that other reviewers have only ordered it as an hour meter and it is quite suitable for that. I also needed it as a diagnostic device (speedometer), but that part of this device doesn't work accurately at all. I have sen-dec sensors on many other parts of my gear which (I know they are not 100% accurate) are much closer to accuracy and not as erratic in performance. I wanted to believe in this device but I had to return the product. (SORRY) So I ordered 2 Seps for 3 times the price and got the tool I needed. I tried all 3 settings according to the instructions. Tried to "reset" this thing and also tried 3, 5 and 7 turns around the plug wire, none of which calmed the erratic RPM readings. I posted a video here which I hope will show up. You can hear the engine running at a steady speed and the counter jumping and landing between 1900 and 5400 rpm. I wanted to love but I couldn't.