Tachometer 4 Digital LED Tach RPM Speed Meter + Hall Proximity Switch Sensor NPN
SKU: 9089630002

Tachometer 4 Digital LED Tach RPM Speed Meter + Hall Proximity Switch Sensor NPN

Sale price$11.49 Regular price$12.77
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Description

Tachometer 4 Digital LED Tach RPM Speed Meter + Hall Proximity Switch Sensor NPNFeature: 1: 4 digits display, clear and easy for readings2: With good stability, high accuracy, anti interference ability. 3: Using the latest A D conversion chip, high stability reference IC and stick chip components. 4: It can be applied to voltage and current measurement, also can be an external sensor to measure temperature, pressure, displacement and other physical quantities 5: Setting parameters will be memorized when power off. 6: Suitable for

Feature:
1: 4-digits display, clear and easy for readings2: With good stability, high accuracy, anti-interference ability.
3: Using the latest A/D conversion chip, high stability reference IC and stick chip components.
4: It can be applied to voltage and current measurement, also can be an external sensor to measure temperature,
pressure, displacement and other physical quantities
5: Setting parameters will be memorized when power off.
6: Suitable for detecting the speed of every kind of motors.
7: Over-range display: the thousand unit display "1" or "-1", the last three do not show.

Specifics:
Condition: 100% Brand New
Material: Plastic
Display type: LED display
Voltage: DC8-24V
Current: 40mA
Measurement range: 10-9999rpm
Accuracy: 0.1%
Clear zero time: About 10s
Display refresh rate: >3 times/sec
LED color: Red / Blue / Green
Sensor wire length: 1M

Note:
1. Connect the plug correctly according to the wiring diagram.
2. The Hall switch is NPN normally open type, and the detection distance of the Hall switch needs to be within 10MM. The Hall switch installation diameter is 12MM, and the wire length is 1M.
3. Strong electromagnetic interference should be avoided. It is better to use shielded wire or twisted pair for the measurement wire.
4. The count signal of the counter and the switch or circuit of the reset signal input should be as close as possible to the terminal of the counter, and the signal line should be as short as possible.
5. Avoid the same tube or twisted wiring with other such as: strong electric wire or power wire, etc., to avoid unnecessary interference, please use shielded wire if necessary, and the shielding layer is connected to the counting terminal "+".
6. It is not recommended to use mechanical switches or micro switches, because their lifespan is relatively short, and it is easy to miscount after a long time;
if you use mechanical switches or micro switches, please try to use better quality, so as to avoid miscounting, strong A magnetic switch is recommended.

Package Included:
1 x LED Tachometer
1 x NPN hall proximity sensor
1 x Magnet


Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 9089630002

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4.0 ★★★★★
Based on 623 reviews
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Product Reviews
C
CMC20
Lake Worth, US
★★★★★ 4
Good DIY Pipe Legs but Powder Coat Quality Lacks
Size: side table leg, Size: side table leg
These industrial style pipe legs make building a DIY end table easy and the kit saves a trip to the hardware store. The fittings go together normally and assembly is simple. Comes individually wrapped. My main issue is the powder coating looks and feels cheap and rubs off easily. The pipes already had marks from touching each other from unboxing. If you do not mind some wear on the finish over time this is a decent purchase. The metal at the hardware store will be thicker and more durable but will cost more. I’d recommend based on ease of having a kit and it being delivered saving me a trip.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
M
Mark Weinberg
Chelsea, US
★★★★★ 5
Stable, attractive, and easy to turn into a table with your choice of top
Size: side table leg
The X-shape of the table legs - constructed with solid metal flanges, T-joints, X-joints and 1-inch diameter pipes - provides a strong and sturdy base for a wood top. The legs have adjustable feet pads to prevent scratches and ensure stability. Assembly of the legs is relatively simple (the instructions are clear) but you will need your own tools to attach a top. The industrial design is especially well suited to rec room or finished basement use. I am adding a 28" diameter raw edge slab of wood from a recently felled tree as the top and it is very attractive. (Photo unavailable because after I made certain it would work I sent the slab out for drying and finishing.) If you want a custom table and have a particular piece of wood you want to use, these legs are an excellent choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
G
Grammar Guru
Lake Worth, US
★★★★★ 5
Very nice kit: Beware it is NOT heavy duty plumbing pipe though!
Size: side table leg
I want to give this kit a high rating, but I need to address the "truth in advertising" bit since there may be an important disconnect between what you think you are getting and what actually comes in the box. Black plumbing used for shelving or table legs is part of an important niche in interior design. I like the industrial loft look myself and have a variety of glass, steel, and masonry elements in my home. This kit fits that look and provides plenty of "strength" for most domestic uses, like shelves or coffee tables. But they are NOT "industrial pipe" or "maximum durability pipe." Note the phrase "cast iron finish feet," which together with the other claims might lead you to think these are cast plumbing fittings. They are NOT! The feet and flanges feel like electrical conduit fittings, and the pipe sections are likely aluminum. They might be electrical or they might be multi-use, lightweight pipe. While all this might lead you to think that you're getting a truly retro, heavy-duty pipe kit made of black plumbing pipe, you are not. But, does it matter? Depends. I find the lighter pipe's smooth finish a nice "tone-down" from the rough plumbing look. All together, this kit provides plenty of strength for most furniture and the rustic pipe look, but with a nicer, lighter finish. To me that is a plus--this is a very nice kit and costs less that if you'd pieced it together from real plumbing parts (I priced it out to compare), and looks retro but cleaner. I knew what to expect because while I got this kit free on Vine, I had purchased a nearly identical kit from another seller last year. So, I'm giving it 5 stars for what it actually is and for the price, JUST BE AWARE THE NARRATIVE IS MISLEADING. Which is unfortunate because just like some people might want the heavier pipe, I'm betting more would be attracted to the look with a cleaner, lighter feel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 31, 2025
M
Verified Purchase
Megan J.
Lake Worth, US
★★★★★ 5
Great buy
Great shelf base! The price is great and it does the job. I just got the actual shelves from Lowe’s and they work great. I used for my teen son’s room and he loves them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
M
Verified Purchase
Morgen Green
Fort Morgan, US
★★★★★ 5
It’s solid and functional
I really like this shelf system.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026

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