DIGITEN DC 12V 4 Digital Red LED Counter Meter Up Down+Hall Proximity Switch Sensor NPN

I bought this to make a counter for Crank Revolutions on my bike for training. It set up with no problems but I used a bigger magnet instead of the one supplied. Early days, but delighted so far.

Yes the included hook up info is not very clear so I've included a nice diagram. Works perfectly so far.

Instructions were clear and unit worked perfectly first time. I used the unit to count rotations of the anchor windless so as to know the amount of anchor chain that is paid out. This unit came with a nice quality hall effect proximity sensor. The counter has independent up and down count inputs. Connect the sensor, via a SPDT toggle switch to select when counting up or down. A reset switch or button is also needed.

日本製のカウンターは液晶表示が多く、文字の大きさも小さめだが、この商品は文字表示が大きく、とても見やすいです。

Added this to a mini lathe to be able to set the 'sweet' spot on the speed for frequent projects.

I bought two of these for a putting green and am installing them to count attempted or made putts. In the testing phase, the first one I tried would come on but the switch would not activate. The second one worked great. I have a plethora of hall sensors and can wire one up that works, but quality testing must be one of those things they scrimp on to keep the price low.

I have this item and it works perfectly. I got it three years now and still working very well. I use it as a bobbin thread counter for my sewing machine.