Review on Digital Red/Blue LED Tachometer RPM Speed Meter with Hall 🔴 Proximity Switch Sensor NPN for LED Panels and Modules - EEEkit by Sirious Cavalli

The price is one of the best I've found. There are no instructions, but the Revain pictures have a schematic. This is necessary as the "seal" on the case is almost too small to be seen. Adequate (actually more than sufficient) length of wire is provided. Using this feature is very valuable to me, the previous (factory) min RPM was around 650 RPM. Using this RPM gauge for reference I was able to change the input RPM to bring my min RPM down to the 500 RPM I wanted . I could also see how fast this car would go if the speed limit was bypassed. The display can be mounted in a "project box" for a more professional look. (The current installation is temporary and I haven't done it yet). The photos show my "temporary" setup. Demonstration of how the device works as advertised. I assume this to be correct, although I don't have a standard of comparison. t. The RPM display (in photos) shows the machine limits (normal speed controls are overridden to achieve the maximum achievable speed). A small minus, the display does not give an "instant" response. After changing the speed, the update takes about a second, which isn't a problem, but I felt compelled to point that out in the test.