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Your cart is empty.Product Description
- Display Type: LED display
- Voltage: DC12-24V
- Current: 40mA
- Measurement Range: 10-9999rpm
- Accuracy: 0.1％
- Clear Zero Time: About 10s
- Display Refresh Rate: >3 times/sec
- Size: about 80*25*40mm(L*W*H)
- Installation Size: about 76*39mm
4-digits display, clear and easy for readings. Mini size, high performance and fast reaction speed.
With good stability, high accuracy, anti-interference ability. Over-range display, the thousand unit display "1" or "-1", the last three do not show.
Using the latest A/D conversion chip, high stability reference IC and stick chip components.
- Detection range: 1mm-10mm
- Proximity output current: 20mA(For the sensor)
- Operating temperature: -10 to 60°C
- Sensor size: 60 x 10mm
- Sensor wire length: 1.2M
- Magnet: 10x2mm
Package Includes: 1 x LED Tachometer.1 x NPN hall proximity sensor.1 x Magnet
Z Ack
Reviewed in the United States on March 1, 2025
If you look at the circuit board there are places where extra buttons can be soldered in. Do this and you get a preprogrammed set of goodies. Stop watch, speed count, slower count, number stuff and stuff. 9 of the stuffs. If you have a temp probe the right Ω then it has a stuff for that too already programmed and ready to use, just need a button.. worth the price, every penny..
Placidbeach
Reviewed in the United States on February 13, 2025
Worked well. Used on a bicycle "bedini motor" wheel. Mounted close to axle (= longer pulse than out at wheel perimeter) but still worked well even with slow speed (not sure minimum... for sure 1hz/60rpm, probably slower). I suspect a longer pulse would have made the reading bounce around if it didn't do some internal averaging. Not a fast update rate (once per second?) I think I found the sensor magnet distance range to be accurate. I used 10mm or so. Don't think it worked any farther away than that.
Pelican
Reviewed in the United States on September 17, 2024
The media could not be loaded.
Sallie Walter
Reviewed in the United States on August 24, 2024
Worked perfectly followed the instructions on Amazon for the wiring. Had to build a mounting bracket for the sensor, which was no problem. Mounted the magnet on the shaft and tested the tach would not work, flipped the magnet over work perfectly. Glued the magnet into place tested again and the tach worked great, so if it doesn’t work try flipping the magnet.
ESTIA
Reviewed in Mexico on April 13, 2023
Ya es mi segunda compra
William C. Tremblay
Reviewed in the United States on November 22, 2020
I'll let my photo provide most of the details, but I am very frustrated to have wasted several hours trying to figure out this evidently defective device. In the course of testing it, I modified the cable, so cannot return. I'll be buying a competing product that has better documentation.The symptoms:After wiring the device, following the given instructions, the display remained dark and never showed digits when the Hall sensor was exposed to a varying magnetic signal. The polarity of the power supply and basic wiring was confirmed by the Hall sensor glowing and flickering in response to magnet motion. I then read more of the comments and saw that the number on the sticker were flipped. I rewired the unit to conform with the working configuration displayed in the youtube video "HOW TO WIRE DIGITAL TACHOMETER" cited in a comment. That's the final wiring layout in my image. I also tried flipping the magnet over as per another review, to no effect (except slightly lessening the sensor LED flicker).The fact that the wiring diagram and labeling on the case is suspect (see other reviews) should have tipped me off that this was not worth the money and time. It's outrageous that this kind of unit comes with no wiring specifications except the Amazon page! Give us a clue, please.
Grampy
Reviewed in the United States on January 13, 2020
Price is one of the best I found.No instructions are included, however the pictures on Amazon give a wiring diagram.. This is necessary because the "printing" on the case is almost too small to see.Plenty (actually more than enough) wire length is provided.Using this is quite valuable for me, the previous (from the factory) minimum speed was around 650 RPM, using this RPM indicator as a reference I was able to modify the speed drive to lower my minimum speed to near the 500 RPM I desired. Also I was able to see how fast this machine would go if the max speed stop is bypassed.The display can be mounted in a "project box" for a more professional appearance. (The current installation is temporary, and I haven't done this yet).The photos show my "temporary" installation". Demonstrating the device works as advertised. I assume it is accurate, although I do not have a standard to compare it to. RPM indications (in photos) show the limits of the machine (normal speed controls overridden to achieve top attainable speed).One slight negative, the display does not give "instant" response. Once speed changes it takes about a second to update. This isn't an issue but I felt obligated to point this fact out in the review.
Richard Skinner
Reviewed in the United States on April 12, 2019
No instructions and description is not accurate. Does it work okay as a single pulse per rev tach? Yes. Two things important to know. #1, the magnetic must have the proper polarity/pole, so test it before you glue or epoxy it to something. Ask how I know.#2, no instructions and no wiring schematic but this worked for me. Terminal #1 is your power supply (+) AND also the Brown lead from the sensor. #2 is the power supply Ground (-) #3 is the Blue wire to the sensor, #4 is not connected, and #5 is the Black wire from the sensor.
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