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 LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Red

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

Product ID: 439202626

Details

Brand
DIGITEN
Item Weight
2.12 Ounces
Item dimensions L x W x H
7.1 x 3.6 x 2
Material
Plastic
Number of Items
1

⚡5-9999 RPM range

📏Compact M12 sensor, 10mm detection range

🔴0.56" bright red LED display

¥10744

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Description

🔴 Stay ahead of the RPM game with precision and style!

PRECISION RPM TRACKING - Accurately measures motor speeds from 5 to 9999 RPM, perfect for fine-tuning your ride or machinery.
PLUG PLAY HALL SENSOR - Includes a reliable Hall NPN proximity sensor with a 10mm detection range for seamless RPM detection.
COMPACT DURABLE DESIGN - Small 72x36x20mm tachometer and M12 sensor fit easily into tight spaces without compromising performance.
WIDE VOLTAGE COMPATIBILITY - Operates smoothly on DC 8-15V, making it versatile for various vehicle and industrial applications.
VIBRANT NIGHT READY DISPLAY - Red LED digits ensure clear visibility in low-light conditions, giving you real-time data when it matters most.

The DIGITEN 4 Digital LED Tachometer is a compact, high-precision RPM speed meter featuring a bright 0.56-inch red LED display and a Hall NPN proximity sensor. It measures motor speeds from 5 to 9999 RPM with automatic zero clearing and refresh rates optimized for different RPM ranges. Designed for easy installation and reliable performance within a DC 8-15V power range, this tachometer is ideal for professionals and enthusiasts seeking accurate, night-visible RPM monitoring in automotive or industrial settings.

Specifications

ASIN	B00VKAT8A2
Best Sellers Rank	#198,775 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #61 in Industrial Tachometers
Brand	DIGITEN
Brand Name	DIGITEN
Customer Reviews	4.2 out of 5 stars 432 Reviews
Item Dimensions	7.1 x 3.6 x 2 Centimeters
Item Weight	2.12 Ounces
Item dimensions L x W x H	7.1 x 3.6 x 2 Centimeters
Manufacturer	DIGITEN
Material	Plastic
Material Type	Plastic
Model Number	5864173439
Number of Items	1
Part Number	RPM1204RHA
UPC	785497558080 713458679192
Voltage	12 Volts

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¥10744

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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