--- product_id: 27230841 title: "bayite DC 5-120V 100A Mini Digital Current Voltage Amp Meter Ammeter Gauge with Hall Effect Sensor Transformer" brand: "bayite" price: "€ 35.30" currency: EUR in_stock: true reviews_count: 9 category: "Bayite" url: https://www.desertcart.pt/products/27230841-bayite-dc-5-120v-100a-mini-digital-current-voltage-amp store_origin: PT region: Portugal --- # 0-100A current capacity Hall Effect sensor with 3/4 inch through-hole 5-120V voltage range bayite DC 5-120V 100A Mini Digital Current Voltage Amp Meter Ammeter Gauge with Hall Effect Sensor Transformer **Brand:** bayite **Price:** € 35.30 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your monitoring game with precision and safety! ## Quick Answers - **What is this?** bayite DC 5-120V 100A Mini Digital Current Voltage Amp Meter Ammeter Gauge with Hall Effect Sensor Transformer by bayite - **How much does it cost?** € 35.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/27230841-bayite-dc-5-120v-100a-mini-digital-current-voltage-amp) ## Best For - bayite enthusiasts ## Why This Product - Trusted bayite brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Electrically isolated sensor protects your gear and peace of mind. - • **Effortless Installation:** Through-hole design ensures quick, hassle-free wiring for busy pros. - • **Clear, Intuitive Display:** Bright, large digits with easy mode switching keep you informed at a glance. - • **Customizable Sensitivity:** Loop wires multiple times to amplify low current signals—precision on demand. - • **Bidirectional Current Measurement:** Accurately track positive or negative current flow with zero direction limits. ## Overview The bayite DC 5-120V 100A Mini Digital Ammeter features a Hall Effect sensor with a 3/4 inch through-hole, enabling easy wiring and bidirectional current measurement up to 100A. Its electrically isolated design ensures safety for sensitive equipment, while a bright digital display offers clear voltage and current readings. Ideal for professionals seeking reliable, customizable current monitoring in compact form. ## Description Buy bayite DC 5-120V 100A Mini Digital Current Voltage Amp Meter Ammeter Gauge with Hall Effect Sensor Transformer: Ammeters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: GREAT LITTLE UNIT WORKS WELL - GREAT LITTLE UNIT WITH CURRENT DO-NUT. Works great; easy to install, stable electronics, even has an extension cable to remote the donut! WILL BUY AGAIN!! Review: Works great. Excellent value. Easy to read display - I wired in a refrigerator in the trunk of my electric car. (too many over buying trips to Costco) The refrigerator is very quiet and it’s hard to tell when it’s on let alone how much current it’s drawing. This handy little device lets me know. Large bright green digits for my old eyeballs. No current sensing resistor to deal with or cause a voltage drop problem under high currents. I took advantage of the included extension cable for the Hall effect sensor, but had to make another one for the DC power. The button on the bottom works fine to switch between the voltage, current, volt-current display modes. I only monitor current though. I did use the zero calibration for the current feature. I also did some bench tests to see how accurate the measurements were. While not important for my application they were within specs. ## Features - Through-hole design: Easy Wiring; Measure positive or negative current; No current direction limitation - Electrically isolated from high voltage power source which eliminates risk to delicate monitoring equipment and also minimizes safety concerns - Display Voltage or (+ -)Current; Voltage Range: 5V-120V; Current range: 0-100A - Compatible with large wire; Diameter of the hole through sensor is 3/4 inch(19 mm) - Loop through sensor multiple times to strengthen signal. For example, if your current signal is only 0.2 Amps, you could loop the wire through the sensor 10 times and the signal would by 10X stronger and would appear as 2.0 Amps ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01DDQM6Z4 | | Best Sellers Rank | #116,411 in Automotive ( See Top 100 in Automotive ) #12 in Automotive Replacement Amp Meter Gauges | | Brand Name | bayite | | Customer Reviews | 4.4 4.4 out of 5 stars (775) | | Item Dimensions | 1.89 x 1.14 x 0.9 inches | | Item Weight | 6.7 Ounces | | Manufacturer | bayite | | Material Type | Acrylonitrile Butadiene Styrene (ABS) | ## Product Details - **Brand:** bayite - **Item Weight:** 6.7 Ounces - **Item dimensions L x W x H:** 1.89 x 1.14 x 0.9 inches - **Manufacturer:** bayite - **Material:** Acrylonitrile Butadiene Styrene (ABS) ## Images ![bayite DC 5-120V 100A Mini Digital Current Voltage Amp Meter Ammeter Gauge with Hall Effect Sensor Transformer - Image 1](https://m.media-amazon.com/images/I/41K8zkOgiYL.jpg) ## Questions & Answers **Q: Is there a 150 or 200 amp capacity available?** A: Sorry. we don't sell 150A or 200A meter. But the 400A version will be available in 4-5 weeks. **Q: Could the sense cable be extended to ? 50 feet. Does cable need to be shielded? Would cat5 work?** A: Yes. The sensor cable can be extended to 50 feet. The cable need to be shieled and the cat5 cable can work. **Q: when swtched to read current only does the display still blink or flicker?** A: I have two of these displaying current at 27vdc. Bought 3 months ago and 3 years ago. Neither of them flicker. **Q: Does the amperage reading or accuracy vary based on the power supply voltage? I have 2 6v batteries in series so I can provide 6 or 12 volts.** A: Amperage is measured independently of voltage, so the answer to your question is "no." As long the display is powered within the stated "5-120V," amperage shown will be just fine. ## Customer Reviews ### ⭐⭐⭐⭐⭐ GREAT LITTLE UNIT WORKS WELL *by A***S on January 15, 2026* GREAT LITTLE UNIT WITH CURRENT DO-NUT. Works great; easy to install, stable electronics, even has an extension cable to remote the donut! WILL BUY AGAIN!! ### ⭐⭐⭐⭐⭐ Works great. Excellent value. Easy to read display *by H***R on June 22, 2025* I wired in a refrigerator in the trunk of my electric car. (too many over buying trips to Costco) The refrigerator is very quiet and it’s hard to tell when it’s on let alone how much current it’s drawing. This handy little device lets me know. Large bright green digits for my old eyeballs. No current sensing resistor to deal with or cause a voltage drop problem under high currents. I took advantage of the included extension cable for the Hall effect sensor, but had to make another one for the DC power. The button on the bottom works fine to switch between the voltage, current, volt-current display modes. I only monitor current though. I did use the zero calibration for the current feature. I also did some bench tests to see how accurate the measurements were. While not important for my application they were within specs. ### ⭐⭐⭐⭐ Useful meter, easy to calibrate if you wire it up correctly, selector button awkward *by R***. on August 28, 2018* I was installing these meters (4 off) in a boat electrical system to measure the volts (circa 12 volts DC) and amperes (up to +/- 150A) in the charging and supply circuits (multiple batteries and charging systems). I used three 0-100A meters and one 0-400A meter. Unfortunately the 0-100A meters display 3 digits to one decimal place (stated accuracy +/- 0.2 Amps) but the 0-400A meter displays only two digits (unless the current exceeds 100A) with no decimal place so accuracy +/- 1 Amp. I could live with the accuracy but aesthetically the four meters, when mounted together, look a little odd; but this is only a cosmetic problem. When operating, the meters continuously take a small supply current so I ran all the neutral wires through a simple on/off switch so that I could switch them all off and avoid permanent current drain on the boat batteries. A more serious problem was the location of the selector switch hidden at the back of the meter and out of reach once the meter is panel mounted. I solved this by wiring a switch in parallel for each meter and surface mounting the new switches in an accessible position. Calibration is straightforward, however, once installed the only realistic calibration method is to ensure that zero current is running in the measured cable....this means that the wire for the power supply for the meter must bypass the Hall effect sensor. You need to figure that into your basic circuit design. Negative voltages are displayed not by a negative sign but by an additional illuminated 'second decimal point' at the end of the display reading. I'd prefer a negative sign but once you get used to it it is fine. The meter comes with an extended connector lead for the Hall effect sensor which I found essential for the installation. The voltage tails are short but extending them to suit the installation was easy and would have been necessary anyway. Overall the system, as installed, is working well and I have already been able to use the meter readings to trouble-shoot a battery failure that was previously hidden. Operating in a marine environment, I was careful to locate the meter panel in a well protected (dry and shaded) position; essential given the display type and the need to protect the electronics. Of course the meters have only just been installed so I cannot comment on long term reliability but so far so good. ## Frequently Bought Together - bayite DC 5-120V 100A Mini Digital Current Voltage Amp Meter Ammeter Gauge with Hall Effect Sensor Transformer - CrocSee 5Pack DC 5-120V Mini Voltmeter Blue LED Digital Display Panel Voltage Meter, 2-Wire, 0.56 Inch, for Motorcycle Battery Monitor - bayite Volt Amp Meter, DC 5-100V 100A Waterproof Dual Display Current Voltage Meter, Digital Mini Ammeter Voltmeter Gauge with Hall Effect Sensor Current Transformer --- ## 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.pt/products/27230841-bayite-dc-5-120v-100a-mini-digital-current-voltage-amp](https://www.desertcart.pt/products/27230841-bayite-dc-5-120v-100a-mini-digital-current-voltage-amp) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-24*