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Docooler Digital Engine Tach Tachometer Hour Meter Gauge Resettable Inductive for Racing Motorcycle

Docooler Digital Engine Tach Tachometer Hour Meter Gauge Resettable Inductive for Racing Motorcycle

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  • Full or Partial Refund , If the item is not as described Learn More >
Wide operating temperature range, suitable for all gasoline engines.
Show engine rpm and record hours of operation.
Large LCD display for easy reading.
Inductive design: You just need to tie the cable to the spark plugs.
System data reset function.
Programmable maintenance interval setting.
Powered by built-in batteries (service life: 2~3 years).
Simple to install.

Color: Black
Resolution: 0.1HRS / 10RPMs
Reading: 9999.9Hrs / 99999RPMs
Operating temperature: Standard -30°C ~ 85°C
Battery life: 2~3 years
Cable length: Approx. 170cm / 67in
Power: 1 * CR2450 battery
Product size: 7.3 * 4.7 * 2cm / 2.9 * 1.9 * 0.8in
Product weight: 50g / 1.8oz
Package size: 7 * 7.2 * 4.6cm / 2.8 * 2.8 * 1.8in
Package weight: 64g / 2.3oz

Package including:
1 * Tach/Hour Meter with Wire

Customer Questions & Answers

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2 votes

How do I turn it off? I only use it for testing purposes, but 5 hours after my first use, the LEDS are stil on..?

  • No off until the battery is dead 5 years from now. If it shut off it would need a wake up that was always active so it stays on.

    By Arev on September 25, 2017

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2 votes

I lost the manual. Does anyone know what the different rpm settings are?

  • go to tiny tach and download manual pdf thanks

    By Danny on April 29, 2018

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1 votes

Is there any way to turn it off? It arrived off and when I pushed a button it woke up. Now the display is always on.

  • I don't think there is a way, I have one on another generator, and for 2 years + the display is always on.

    By ROGER on August 14, 2017

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1 votes

Will this work for setting the rpm's on a 2007 honda ch80 scooter?

  • I recommend you not purchase from a Charlotte North Carolina E Bay seller who has sold me a defective piece which I returned July 6th. He has not replaced my part. E bay has been NO HELP in a replacement or a refund, They have wasted my time. Hi bob, simply wrap the trigger wire around your spark plug wire, Use more tu… see more I recommend you not purchase from a Charlotte North Carolina E Bay seller who has sold me a defective piece which I returned July 6th. He has not replaced my part. E bay has been NO HELP in a replacement or a refund, They have wasted my time. Hi bob, simply wrap the trigger wire around your spark plug wire, Use more turns than specified. see less

    By Lloyd 193 on August 8, 2017

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0 votes

Will this work on a 4 cyl motor?

  • Yes, it will work a 4 cylinder engine!

    By john smith on May 15, 2018

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0 votes

When you replace the battery does it loose all the information on runtime or is it held in some type of memory?

  • it is held by an internal battery - go for it.

    By John Smith on April 14, 2018

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0 votes

Has any one replaced the battery? If so what is the battery number?

  • I do not believe you can replace the battery. I contacted the seller of mine about this and got conflicting info. They lastly told me to pry off the back to replace the battery which I believe will break the unit if attempted. My 2 still work so I have not tried it yet.

    By HondaFan on April 13, 2018

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0 votes

Is this unit weatherproof ?

  • It appears to be, but my unit seems to have failed even though it was mounted inside the cab. It's stuck on 550 rpm, even when the engine is off.

    By T.B. on April 12, 2018

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0 votes

i this unit for 2 stroke or 4 stroke. 2 stoke : 1 fire every turn of the engine; 4 stroke: 1 fire every 2 turn of the engine. is it possible to set?

  • It will work with any of those. It can be set.

    By David W. Hurlbut on April 5, 2018

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0 votes

what is the spacing of the mounting holes

  • 2.5" center to center

    By Steve R. Brinson on April 3, 2018


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Customer Reviews

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based on 259 Customer Reviews

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  • By Michael

    February 9, 2017

    Small package but does a decent job. I used this unit to verify another unit I had installed on a 2-stroke hovercraft engine. The instructions for installation are easy enough, just wrap a single wire around a spark plug wire and tape it down with electrical tape. On the original installation I had to add about 3' of additional wire to reach the engine to be able to mount the tachometer up front for display. Not sure, but perhaps the additional length of wire caused a difference in readings as the installed tach read about 100 RPM less than this one. Bother were in the ballpark, so I'd say performance is acceptable. The display is a little hard to read in bright sunlight, but it can still be read. A big upside to this design would be a replaceable battery. Some reviewers said they could get the back of the case open to replace the battery. That may be possible, but on this one it is sealed up pretty tight. Still, when the time comes I may still try that. Remember to program it for your engine, for a 2-cylinder 2-cycle engine I had to select the setting for two sparks per engine revolution. Once set it seemed to work just as expected. Accuracy +/- 100 RPM or so, but generally speaking good enough.

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  • By gadgetjunki

    January 1, 2017

    I have one on an aircraft and it has been running for years. Unlike that one, this has a replaceable battery, which has both advantages and disadvantages. The one on the plane has only been replaced once since 2004, so it is bound to last long weather you get the batter, or battery free model. The battery is not supplied and not cheap where I live, just be aware of that. It seems easy to use, instructions are somewhat understandable. All you do is wrap it around the spark plug wire 4 times (not critical) use the supplied cable tie to secure it on the plug wire and you are ready to go. It could not be simpler.

    Is this helpful? (0) (0)

  • By Pacaw 66

    December 6, 2016

    This little engine tachometer and hour meter works great. Like so many others have said however, the only con I can see is the lack of instructions. Due to the fact that my bulldog UTV does not have either a tachometer or hour meter, I found it necessary to purchase this to keep track of the number of hours that the engine was running for maintenance purposes and oil changes. Again as others have mentioned in their reviews the pulse sensing wire was not long enough. I did a simple in-line splice of an 20 gauge wire to add the necessary three additional feet I needed to get from the dash back to the engine compartment. I did as others had suggested and wrapped around one of the spark plug wires approximately 5 full turns of wire. The five turns in conjunction with the splice appeared to be more than enough to provide the pulsing information to the meter as everything is working exactly as it should. I am however puzzled at the two switches labeled S1 and S2. I have tried a number of times depressing either one of the other or both of the switches to see if there was a way to correctly input the fact that this engine is a four stroke twin cylinder. I tried momentarily depressing S1, nothing happened. Then depressing S2 momentarily nothing happened. Then pressing and holding S1 for several seconds then releasing with nothing happened. Then depressing S2 for several seconds and releasing with nothing happening. Then depressing and holding S1 while momentarily depressing S2 nothing happened then pressing and holding S1 well pressing and holding S2 for several seconds nothing happened then pressing and holding S2 for several seconds while momentarily pressing S1 nothing happened and finally pressing and holding S2 and pressing and holding S1 again nothing happened. Anyone else been able to figure out what if anything the switches do? I have also read that some complain about the inability to change the battery internal to the meter. On mine the back can be pried off and the battery replaced. However as cheap as these are I would simply throw the old one away and install a new one. Other than that this thing works great!

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  • By h***o

    October 12, 2018

    Very good tachometer.Works perfectCheapest on internet

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  • By c***l

    November 19, 2017

    Very happy will order again thank you 😀very fast shipping will be reordering

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  • By r***0

    April 24, 2017

    Works pretty good. Confusing instructions, but I figured it out. Thanks!

    Is this helpful? (0) (0)

  • By Richard Kranski

    December 19, 2016

    it worked as advertised - helpful

    Is this helpful? (0) (0)

  • By d***h

    January 14, 2016

    good item quick delivery thanks

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  • By d***5

    January 11, 2016

    A smooth transaction with an A+++ seller. My new engine and I are thankful!

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  • By a***8

    December 23, 2015

    tutto perfetto, ottimo venditore

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  • By s***l

    September 25, 2015

    Great seller! Thanks!

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  • By j***r

    September 25, 2015


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  • By j***s

    September 8, 2015

    on time and works great!

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  • By i***t

    September 4, 2015

    Great product, service and price, thanks.

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  • By i***o

    May 9, 2015


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  • By k***t

    March 17, 2015

    Thank you for selling, fast and safe shipping. Meter Works Great !!

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  • By h***n

    February 12, 2015

    Excellent service

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  • By s***9

    January 24, 2015

    Item came as described, fast shipping

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  • By p***s

    January 16, 2015

    Delivered as promised from US. Great. Thanks.

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  • By w***t

    December 8, 2014

    super gut und schnell 1a

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