🔢 DIGITEN 4-Digit Green LED Tachometer with RPM Speed Meter and Hall Proximity Switch Magnet Sensor NPN, Ideal for Lathe and Conveyor Belt Applications Review

The first came without the plug and wire connecting the block to the sensor, but due to health reasons I didn't realize this until after the return period. I have ordered a second one. It arrived full but refuses to read the RPM. The documentation and notes on the website say it runs on 9V and in fact recommend using a 9V battery for testing. However, in the depths of the limited documentation it says that you should read 12V on one of the wires. I have ordered a 12v power adapter and will be…

Short test report without bullshit. I bought 2 of these and will buy more if needed. Set it up and use it according to the instructions to set up an easy-to-use tachometer. I've used a 9 volt battery with no problems, but will be using a wall wart for a more permanent mount. Attach the magnet with tape or glue. Otherwise, you deserve to be hit in the forehead by a high-speed object (yes, I failed that IQ test myself). Mark the polarity of the magnet with a colored marker and mount it correctly.

I bought this for my Craftsman lathe. The headstock speed chart is so faded I can't read it and I can't find a chart with the same belt arrangement as mine. I used the stopper pin hole on the headstock housing as a retainer after making the pin that replaced the pin. The entire installation took a few hours and all I bought was a couple of set screws and allen screws. I also bought a Revain 9 volt battery adapter canister with a switch to power it. The readings are housed in a plastic container