Can you recommend a 110v power supply for the tach here from Amazon?

I save old wall warts, those plug-in AC adapters that you plug in the wall, and then into your device, and I found one of them that supplied the recommended voltage, cut off the device plug and connected it to the tachometer power wires.

Will this work on lawnmowers?

If you can install the magnet and sensor in lawnmower. i think it can work with it. thank you@

Is there a way to output the tach signal to a data acquisition system that reads in voltage?

This hall sensor acts as a NO switch. Meaning that voltage/current are allowed to pass only when the magnet is near the sensor. For use as a tachometer, you would be reading pulses/second, or frequency. So data logging voltage wouldn't really work unless you worked some excel magic afterwards.

what is the maximum length of the sensor wire? 44 inches is too short for my need. Can I lengthen it?

I installed this on my combine to measure the fan RPM speed. I needed to add more wire to reach the display mounted inside the cab. The total length of the wire is over 15 feet. I believe it would work at even a greater length. The unit works great.

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DIGITEN 4 Digital Red LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt

DIGITEN 4 Digital Red LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt

Product ID: 18058321

Details

Brand
DIGITEN
Item Weight
2.12 ounces
Item dimensions L x W x H
2.8 x 1.4 x
Material
Plastic
Number of Items
2

⚡5-9999 RPM range

🔴0.56" bright red LED display

🧲Hall proximity sensor with 10mm detection

4967 kr

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Description

🔴 Spin it, see it, own it — RPM precision that keeps you ahead!

PRECISION RPM TRACKING - Accurately measures motor speeds from 5 to 9999 RPM, ensuring you never miss a beat in your workflow.
INSTANT VISUAL FEEDBACK - Vibrant 0.56-inch red LED display offers clear, real-time RPM readings even in low-light environments.
PLUG PLAY SENSOR SETUP - Includes a Hall NPN proximity sensor and magnet for hassle-free installation with no programming required.
ROBUST INDUSTRIAL DESIGN - Compact M12 sensor and durable tachometer housing built to withstand demanding workshop and conveyor belt conditions.
WIDE VOLTAGE COMPATIBILITY - Operates seamlessly on DC 8-15V, perfect for diverse industrial and automotive applications.

The DIGITEN 4 Digital Red LED Tachometer is a high-precision RPM speed meter designed for industrial and automotive use. Featuring a wide measurement range of 5-9999 RPM, a bright 0.56-inch red LED display, and an included Hall proximity sensor with magnet, it delivers instant, accurate RPM readings. Its compact design and broad DC 8-15V power compatibility make it ideal for lathe machines, conveyor belts, and fuel delivery trucks, providing reliable performance with easy installation and zero programming.

Specifications

ASIN	B00VKAT8A2
Best Sellers Rank	#372,253 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #75 in Industrial Tachometers
Brand Name	DIGITEN
Customer Reviews	4.2 4.2 out of 5 stars (444)
Item Dimensions	2.8 x 1.4 x 0.8 inches
Item Weight	2.12 ounces
Manufacturer	DIGITEN
Material Type	Plastic
Model	5864173439
Number of Items	2
Number of Packs	1
Part Number	RPM1204RHA
UPC	785497558080 713458679192
Unit Count	1 Count
Voltage	12 volts

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4967 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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