--- product_id: 28592239 title: "4 Digital Green LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt" brand: "digiten" price: "21837CFA" currency: XOF in_stock: true category: "Digiten" url: https://www.desertcart.sn/products/28592239-4-digital-green-led-tachometer-rpm-speed-meter-hall-proximity store_origin: SN region: Senegal --- # DC 8-15V power range 0.56" bright green LED display 5-9999 RPM measurement range 4 Digital Green LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt **Brand:** digiten **Price:** 21837CFA **Availability:** ✅ In Stock ## Summary > 🚀 Measure your speed, master your craft — never miss a beat with DIGITEN! ## Quick Answers - **What is this?** 4 Digital Green LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt by digiten - **How much does it cost?** 21837CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/28592239-4-digital-green-led-tachometer-rpm-speed-meter-hall-proximity) ## Best For - digiten enthusiasts ## Why This Product - Trusted digiten brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Simplicity:** Easy snap-in installation with clear wiring instructions—get up and running in minutes. - • **Precision RPM Tracking:** Accurate ±2-3% measurement for motors up to 9999 RPM keeps your workflow flawless. - • **Versatile Industrial Use:** Perfect for lathes, CNC machines, conveyors, and more—engineered for professional environments. - • **Real-Time Visual Feedback:** Bright green LED display ensures instant RPM readings, reducing downtime and guesswork. - • **Reliable Hall Sensor Tech:** Durable NPN Hall proximity sensor with magnet ensures consistent, non-contact RPM detection. ## Overview The DIGITEN 4 Digital Green LED Tachometer is a high-precision RPM speed meter designed for industrial and professional use. Operating on DC 8-15V, it measures motor speeds from 5 to 9999 RPM with ±2-3% accuracy. Featuring a bright 0.56" green LED display and a reliable Hall NPN proximity sensor with magnet, it offers easy installation and real-time RPM monitoring for lathes, CNC machines, conveyors, and more. ## Description Specification Power requirement: DC 8-15V Measure range : 5-9999RPM. Clear zero: Automatic. Clear zero time: about 10s. The greater RPM value, the longer clear zero time. Refresh frequency: 0.2-0.5S@120-1200RPM;0.25-0.06S@2400-9999RPM. Measure accuracy: RPM5000,±3. Display: Green 0.56 inch LED Sign: Pusle signal,Hall NPN 3 wires normally closed. Hall proximity model: NJK-5002D Appearance: M12mm cylinder. Detection range: 2-3mm Proximity output current: 200mA Detected objects: magnet Response frequency: 100HZ Tachometer dimension:72x36x20mm,panel cutout Dimension:68x33mm. Sensor dimention: M12x37mm. Sensor wiring: brown--Power+; blue--Power-; black--signal. Operating temperature: 0 to 50°C. Package includes Tachometer x 1 Hall NPN proximity sensor x 1 Magnet x 1Tips： 1.Please confirm that all the wires are connected correctly. 2. The direction of the magnet must be correct. If it is not correct, please flip the magnet. 3.The distance between the magnet and the sensor must be kept at 2-3mm (0.07"-0.12"). If you have any other questions, please feel free to contact us by email, we will definitely solve the problem for you. ## Features - Measure range: 5-9999RPM. - Power requirement:DC 8-15V - Come with hall sensor and magnet - Display: Green 0.56" LED - Application: Lathe, CNC, Mower, Spring, etc.Measure varied motor RPM. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01FQMI18Y | | Best Sellers Rank | #27,466 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Industrial Tachometers | | Brand Name | DIGITEN | | Customer Reviews | 4.4 4.4 out of 5 stars (713) | | Item Dimensions | 2.8 x 0.8 x 1.4 inches | | Item Weight | 3.5 Ounces | | Manufacturer | DIGITEN | | Material Type | PLA_(Polylactic_Acid), PE_(Polyethylene) | | Model | 5823950920 | | Part Number | RPM1204GHA | | Voltage | 12 Volts | ## Product Details - **Brand:** DIGITEN - **Item Weight:** 3.5 Ounces - **Item dimensions L x W x H:** 2.8 x 0.8 x 1.4 inches - **Material:** PLA_(Polylactic_Acid), PE_(Polyethylene) - **Voltage:** 12 Volts ## Images ![4 Digital Green LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt - Image 1](https://m.media-amazon.com/images/I/71V-TVeOTXL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: can you run the wires for power directly to the power switch on my wood lathe?** A: Hello; The requirement for the 4-digit counter is a DC voltage between 8 and 15 VDC. Your switch, I presume, switches 120VAC to the lathe if you live in the U.S., and 240VAC if you live in Europe, England, or a few other countries. It would make for a nice fireworks display if you connected this device to a higher AC voltage. What I did was to buy a small 120VAC to 12VDC low current power supply, and it was about the size of a small box of matches, perhaps an inch (25mm) on the longest side. The power supply and display come on with the switch, and report on my lathe's RPM just nicely. I hope this helps, best of luck, Ken **Q: what is the thread pitch of the Hall sensor threads** A: 12 mm x 1 mm pitch. Kind of an oddball size. Hope this helps **Q: Can I use a 3/16" or 1/4" dia. magnet that is longer, so I can drill a hole in a pulley, so it can't fly off?** A: Your probably better off with a drop of 2 part epoxy or super glue. By drilling the pulley and replacing with a different density material you may change the balance and induce vibration. I just let the magnet hold it on my wood lathe shaft so far to 1200rpm. **Q: I have a vfd suppling power to a 3 phase motor, the vfd has a terminal with 10vdc output connection but only allows 10ma is that enough power to run** A: Enough power to light up a small LED but nothing else. ## Frequently Bought Together - DIGITEN 4 Digital Green LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt - Digital LED Tachometer, Icstation RPM Speed Meter AC 110V 220V Digital Motor Tachometer with Hall Proximity Switch Sensor NPN for Lathes, Conveyor Belts, Quality Inspection Machines - PSI Woodworking TCLVSKIT2 Variable Speed Lathe Conversion Kit --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/28592239-4-digital-green-led-tachometer-rpm-speed-meter-hall-proximity](https://www.desertcart.sn/products/28592239-4-digital-green-led-tachometer-rpm-speed-meter-hall-proximity) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-25*