--- product_id: 21185264 title: "DROKxae; 0.28\" Dual Display Digital DC Voltmeter Ammeter Amp Meter 0-999mA Voltage Meter 0-33V DC 3.5-30V Power Supply Volt Current Meter Tester Panel RG Display" brand: "drok" price: "S$0" currency: SGD in_stock: false reviews_count: 1 url: https://www.desertcart.sg/products/21185264-drokxae-0-28-dual-display-digital-dc-voltmeter-ammeter-amp store_origin: SG region: Singapore --- # 0-999mA Range 0.28" Dual Display -10~65℃ Operating Temp DROKxae; 0.28" Dual Display Digital DC Voltmeter Ammeter Amp Meter 0-999mA Voltage Meter 0-33V DC 3.5-30V Power Supply Volt Current Meter Tester Panel RG Display **Brand:** drok **Price:** S$0 **Availability:** ❌ Out of Stock ## Summary > πŸ”Œ Power Your Insights! ## Quick Answers - **What is this?** DROKxae; 0.28" Dual Display Digital DC Voltmeter Ammeter Amp Meter 0-999mA Voltage Meter 0-33V DC 3.5-30V Power Supply Volt Current Meter Tester Panel RG Display by drok - **How much does it cost?** S$0 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/21185264-drokxae-0-28-dual-display-digital-dc-voltmeter-ammeter-amp) ## Best For - drok enthusiasts ## Why This Product - Trusted drok brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact Design:** Tiny size (48 x 29 x 26 mm) fits anywhere. - β€’ **Effortless Power:** Draws power directly from the measured circuit. - β€’ **Rapid Refresh Rate:** Refreshes 500 times/ms for real-time monitoring. - β€’ **Precision Performance:** Accuracy of Β± 1% for reliable readings. - β€’ **Versatile Voltage Range:** Measures DC voltage from 0-33.0V. ## Overview The DROK 0.28" Dual Display Digital DC Voltmeter Ammeter is a compact and efficient tool designed for precise voltage and current measurements. With a dual LED display, it offers a voltage range of 0-33V and a current range of 0-999mA, all while being powered directly from the circuit under test. Its impressive refresh rate and wide operating temperature make it ideal for various applications. ## Description Wiring: The thin red wire (VCC): Power supply input + (3.5-30V); [If the measured signal is lower than 30V and can sharing the measured power supply, please be sure that the thin yellow wire and the thin red wire were connected in parallel] The thin black wire (GND): Power supply input - (3.5-30V), common ground design; The thin yellow wire (VIN): Measuring input+ (0-33.0V) The thick red wire (I +): Current input + (must be connected to the load) The thick black line (I-): Current input - (must be connected to the power supply in series) Calibration instruction: Error phenomenon:Because of the some eclectic parts ageing and influenced by the temperature, sometimes when measuring the small current, the error of some meter become big or sometimes some meter don't show zero without load. Solution:When the meter is off the power, please short circuit A and B (connect A and B). Then make the meter have the electricity, the meter will automatically calibrated to zero. When the automatic calibration is over, please disconnect A and B. After this, that is ok. Error phenomenon :Because of the some eclectic parts ageing and influenced by the temperature, sometimes when measuring big current, the error of some meter become big. Solution:let the meter show about half of the range (for example: range 0-10A, let meter show about 5A). At the meaning time, you adjust R7 until the meter show the value is same to the value the more digit meter show. Package include: 1x voltage cuurent meter ## Features - DC ammeter and voltmeter with accuracy Β± 1% 2digits, three 0.28-inch dual LED digital tube. - Voltmeter range is DC 0-33.0V, ammeter range is DC 0-999mA, Power supply is DC3.5-30V.- - Easy to use, power is from measured circuit when testing current, needn't seperate power supply. - Refresh rate is 500 times/ms which make it work efficiently, operating temperature is -10~65℃. - With a tiny size 48 x 29 x 26 mm and its installing size is 45 x 26 mm. ## Images ![DROKxae; 0.28" Dual Display Digital DC Voltmeter Ammeter Amp Meter 0-999mA Voltage Meter 0-33V DC 3.5-30V Power Supply Volt Current Meter Tester Panel RG Display - Image 1](https://m.media-amazon.com/images/I/71JrPUnEm7L.jpg) ![DROKxae; 0.28" Dual Display Digital DC Voltmeter Ammeter Amp Meter 0-999mA Voltage Meter 0-33V DC 3.5-30V Power Supply Volt Current Meter Tester Panel RG Display - Image 2](https://m.media-amazon.com/images/I/71eMzYmOJSL.jpg) ![DROKxae; 0.28" Dual Display Digital DC Voltmeter Ammeter Amp Meter 0-999mA Voltage Meter 0-33V DC 3.5-30V Power Supply Volt Current Meter Tester Panel RG Display - Image 3](https://m.media-amazon.com/images/I/71jEHFF+tjL.jpg) ![DROKxae; 0.28" Dual Display Digital DC Voltmeter Ammeter Amp Meter 0-999mA Voltage Meter 0-33V DC 3.5-30V Power Supply Volt Current Meter Tester Panel RG Display - Image 4](https://m.media-amazon.com/images/I/71XddWrgg1L.jpg) ![DROKxae; 0.28" Dual Display Digital DC Voltmeter Ammeter Amp Meter 0-999mA Voltage Meter 0-33V DC 3.5-30V Power Supply Volt Current Meter Tester Panel RG Display - Image 5](https://m.media-amazon.com/images/I/61Pj2QWg24L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ you'll find it's easy enough to connect it *by D***E on Reviewed in the United States πŸ‡ΊπŸ‡Έ on May 28, 2016* I got this meter to see the output from a solar panel I'm testing for an electro-horticulture test. The meter works perfectly, I'll have to wait and see on the horticulture results. There are a couple different ways to wire it, depending on what kind of power source you have in the circuit. I see in some reviews folks had trouble with the wiring. But if you follow the diagrams included on the Amazon website, you'll find it's easy enough to connect it. Just pick the diagram appropriate for your setup, and the wiring will be fine. --- ## 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.sg/products/21185264-drokxae-0-28-dual-display-digital-dc-voltmeter-ammeter-amp](https://www.desertcart.sg/products/21185264-drokxae-0-28-dual-display-digital-dc-voltmeter-ammeter-amp) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-05-09*