--- product_id: 18058321 title: "DIGITEN 4 Digital Red LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt" brand: "digiten" price: "AR$71824" currency: ARS in_stock: true reviews_count: 13 category: "Digiten" url: https://www.desertcart.com.ar/products/18058321-digiten-4-digital-red-led-tachometer-rpm-speed-meter-hall store_origin: AR region: Argentina --- # DC 8-15V power range RPM range 5-9999 with Hall sensor 0.56" bright red LED display DIGITEN 4 Digital Red LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt **Brand:** digiten **Price:** AR$71824 **Availability:** βœ… In Stock ## Summary > πŸ”΄ Spin it, see it, own it β€” RPM precision at your fingertips! ## Quick Answers - **What is this?** DIGITEN 4 Digital Red LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt by digiten - **How much does it cost?** AR$71824 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/18058321-digiten-4-digital-red-led-tachometer-rpm-speed-meter-hall) ## 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 - β€’ **Precision RPM Tracking:** Accurately measures motor speeds from 5 to 9,999 RPM, ensuring you never miss a beat in your workflow. - β€’ **Instant Visual Feedback:** Bright 0.56-inch red LED display offers clear, real-time RPM readouts even in dim industrial settings. - β€’ **Robust Industrial Design:** Compact M12 sensor and durable tachometer housing built to withstand 0-50Β°C operating environments. - β€’ **Versatile Application Ready:** Perfect for lathes, conveyor belts, and fuel delivery trucksβ€”trusted by professionals for reliable RPM monitoring. - β€’ **Plug & Play Magnetic Sensing:** Includes a Hall NPN proximity sensor and magnet for effortless, no-programming-required installation. ## Overview The DIGITEN 4 Digital Red LED Tachometer is a compact, industrial-grade RPM speed meter featuring a Hall proximity sensor and magnet for magnetic pulse detection. It operates on DC 8-15V power, measures speeds from 5 to 9,999 RPM, and displays results on a bright 0.56-inch red LED. Designed for easy installation with no programming needed, it’s ideal for monitoring motor speeds on lathes, conveyor belts, and delivery trucks, delivering reliable, real-time RPM data in demanding environments. ## Description Power requirement:DC 8-15V Measure range : 5-9999RPM. Clear zero: Automatic. Clear zero time:about 10s.the greater the RPM value,the longer the clear zero time. Refresh frequency: 0.2-0.5S@120-1200RPM;0.25-0.06S@2400-9999RPM. Display:RED 0.56 inch LED Sign:Pusle signal,Hall NPN 3 wires normally open. Hall proximity model:NJK-5002C Appearance:M12mm cylinder. Detection range: 10mm Proximity output current: 200mA Detected objects: magnet Response frequency: 100HZ Tachometer dimension:72x36x20mm,panel cutout Dimension:68x33mm. Sensor dimention: M12x10x55mm. Sensor wiring:brown-Power+;blue-Power-;black-signal. Operating temperature: 0 to 50℃. Packaging include Tachometer x 1 Hall NPN proximity sensor x 1 Review: Works Perfectly and Very Inexpensively - We have installed more than 10 of these on Fuel/Oil delivery trucks. These are mainly expensive new delivery trucks and we must stand behind them - so far no problems at all. We have supplied our own rectangular magnets to fit our purpose better: 1/8" x 1/4" x 1/2" that we install in an existing keyway, or we mill a 1/4" keyway into an accessible part, then epoxy in place. The sensor is installed in an existing part by drilling and tapping a 12mm x 1.0 thread (tap purchased from McMaster-Carr), or we fabricate a bracket and use the double nut method. The magnet must have North & South on the big flat side, and South must be out. We buy the magnets from K&J Magnetics (Part# B842), and they have a nice little iPhone and Android app available for identifying North and South. If the app gets confused, the magnet is probably not "pole"ed correctly. The wiring colors make it less than perfect for hooking it up, but the diagram included is correct. The tach reads 1 to 1: 1 magnet sensed = 1 full turn. No setup or programming required. Review: Cheap, seems accurate and works well - I wanted a direct readout of spindle speed on my metal lathe, and this little gauge/sensor fit the bill perfectly. It uses a magnetic sensor to detect a magnet attached to the shaft spinning past it. You need to tape, glue or otherwise affix the small disc magnet to the shaft you're monitoring, so make sure you attach it securely if your machine will be spinning at high RPMs. (It claims to measure speeds up to 9,999 rpm; I'd be a little nervous about the magnet flying off under those conditions. I don't know if you could use a stainless steel (non-magnetic) strap to attach it and still have the sensor "see" the magnet, but it wasn't a concern for my usage. Just a heads-up to others who might need to use it in a higher-rpm range. (Probably better to use a reflective vs magnetic sensor for high shaft speeds...) ## Features - Measure range: 5-9999RPM. - Power requirement:DC 8-15V - Come with hall sensor and magnet - Display:red 0.56" LED - Measure varied motor RPM ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00VKAT8A2 | | Best Sellers Rank | #309,271 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #70 in Industrial Tachometers | | Brand Name | DIGITEN | | Customer Reviews | 4.2 4.2 out of 5 stars (441) | | Item Dimensions | 2.8 x 1.4 x 0.8 inches | | Item Weight | 2.12 Ounces | | Manufacturer | DIGITEN | | Material Type | Plastic | | UPC | 785497558080 713458679192 | ## Product Details - **Brand:** DIGITEN - **Item Weight:** 2.12 Ounces - **Item dimensions L x W x H:** 2.8 x 1.4 x 0.8 inches - **Material:** Plastic - **Voltage:** 12 Volts ## Images ![DIGITEN 4 Digital Red LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt - Image 1](https://m.media-amazon.com/images/I/71dZmGyzgLL.jpg) ## Questions & Answers **Q: Can you recommend a 110v power supply for the tach here from Amazon?** A: 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. **Q: Will this work on lawnmowers?** A: If you can install the magnet and sensor in lawnmower. i think it can work with it. thank you@ **Q: Is there a way to output the tach signal to a data acquisition system that reads in voltage?** A: 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. **Q: what is the maximum length of the sensor wire? 44 inches is too short for my need. Can I lengthen it?** A: 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works Perfectly and Very Inexpensively *by U***R on September 9, 2024* We have installed more than 10 of these on Fuel/Oil delivery trucks. These are mainly expensive new delivery trucks and we must stand behind them - so far no problems at all. We have supplied our own rectangular magnets to fit our purpose better: 1/8" x 1/4" x 1/2" that we install in an existing keyway, or we mill a 1/4" keyway into an accessible part, then epoxy in place. The sensor is installed in an existing part by drilling and tapping a 12mm x 1.0 thread (tap purchased from McMaster-Carr), or we fabricate a bracket and use the double nut method. The magnet must have North & South on the big flat side, and South must be out. We buy the magnets from K&J Magnetics (Part# B842), and they have a nice little iPhone and Android app available for identifying North and South. If the app gets confused, the magnet is probably not "pole"ed correctly. The wiring colors make it less than perfect for hooking it up, but the diagram included is correct. The tach reads 1 to 1: 1 magnet sensed = 1 full turn. No setup or programming required. ### ⭐⭐⭐⭐⭐ Cheap, seems accurate and works well *by D***S on August 25, 2022* I wanted a direct readout of spindle speed on my metal lathe, and this little gauge/sensor fit the bill perfectly. It uses a magnetic sensor to detect a magnet attached to the shaft spinning past it. You need to tape, glue or otherwise affix the small disc magnet to the shaft you're monitoring, so make sure you attach it securely if your machine will be spinning at high RPMs. (It claims to measure speeds up to 9,999 rpm; I'd be a little nervous about the magnet flying off under those conditions. I don't know if you could use a stainless steel (non-magnetic) strap to attach it and still have the sensor "see" the magnet, but it wasn't a concern for my usage. Just a heads-up to others who might need to use it in a higher-rpm range. (Probably better to use a reflective vs magnetic sensor for high shaft speeds...) ### ⭐⭐⭐⭐⭐ Superb piece of electronics *by B***W on April 30, 2022* I installed this tach inside the spindle gearbox of my lathe in 2017. It runs in oil, vibration, heat and general misery all the time. It was a simple install and very cost effective to try out, I didn't expect it to last very long. It is the end of April 2022 and this tach has never skipped a beat. Probably the best money I have ever spent for an electronic upgrade. I would recommend this product 100% of the time. It has been proven under the most severe conditions. ## Frequently Bought Together - 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 + Sensor Mounting Holder for Lathe Conveyor Belt - DIGITEN 4 Digital LED Tachometer RPM Speed Meter+Hall Proximity Switch Sensor NPN Blue --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/18058321-digiten-4-digital-red-led-tachometer-rpm-speed-meter-hall](https://www.desertcart.com.ar/products/18058321-digiten-4-digital-red-led-tachometer-rpm-speed-meter-hall) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-23*