--- product_id: 54533127 title: "3-48V Digital LCD Circuit Tester w/ 140 Inch Extended Spring Wire & Probe | 3-48v Range, Accurate Backlight Digital Display, 140'' Extended PU Spring Wire, for Car Truck Low Voltage & Light Tester" brand: "jastind" price: "$42.47" currency: USD in_stock: true reviews_count: 11 category: "Jastind" url: https://www.desertcart.us/products/54533127-3-48v-digital-lcd-circuit-tester-w-140-inch-extended store_origin: US region: United States of America --- # 3-48V wide voltage range 140-inch extended spring wire ±0.2V accuracy digital LCD 3-48V Digital LCD Circuit Tester w/ 140 Inch Extended Spring Wire & Probe | 3-48v Range, Accurate Backlight Digital Display, 140'' Extended PU Spring Wire, for Car Truck Low Voltage & Light Tester **Brand:** jastind **Price:** $42.47 **Availability:** ✅ In Stock ## Summary > 🔧 Power up your diagnostics with precision and reach — don’t get left in the dark! ## Quick Answers - **What is this?** 3-48V Digital LCD Circuit Tester w/ 140 Inch Extended Spring Wire & Probe | 3-48v Range, Accurate Backlight Digital Display, 140'' Extended PU Spring Wire, for Car Truck Low Voltage & Light Tester by jastind - **How much does it cost?** $42.47 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/54533127-3-48v-digital-lcd-circuit-tester-w-140-inch-extended) ## Best For - jastind enthusiasts ## Why This Product - Trusted jastind brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Heavy-duty acetate fiber body and sharp stainless steel probe designed to pierce wires and resist shattering. - • **Confidence in Every Test:** Backed by lifetime customer support, ensuring your investment is protected and reliable. - • **Precision Voltage Insight:** Accurate to ±0.2V with crisp backlit LCD for clear readings anytime, even in the dark. - • **Unmatched Reach & Flexibility:** Extra-long 140-inch PU spring wire with alligator clip for effortless one-hand testing in tight spots. - • **Versatile Vehicle Compatibility:** Perfectly engineered for 3-48V DC circuits—cars, trucks, and all your automotive electrical needs. ## Overview This heavy-duty digital circuit tester offers a wide 3-48V range with ±0.2V accuracy displayed on a backlit LCD, paired with a 140-inch extended spring wire and durable stainless steel probe. Designed for automotive and low voltage electrical testing, it combines precision, durability, and convenience, making it an essential tool for professionals and enthusiasts alike. ## Description Large Size Heavy Duty 3-48V Digital LCD Circuit Tester with 140 Inch Extended Spring Wire,Car Truck Low Voltage & Light Tester with Stainless Probe: desertcart.com: Tools & Home Improvement Review: Works great. - Great item. Review: Excellent tool - A standard test “light” will only confirm you have voltage present. This one tells you what that voltage is. I was able to determine voltage drop and find that a connection was corroded. So, it paid for itself right there in my eyes. ## Features - 【3-48v Wide Range】 3-48v widely use digital circuit tester/circuit test light, designed to check car vehicle electrical circuits, headlights, taillights, turn signal circuits, faulty sockets, fuses, automotive battery and other 3-48v DC wirings and circuits. - 【Computer Safe Accurate Backlight Digital Display】 Resolution to .1V voltage reading on white backlight LCD digital display, with high accuracy to ±0.2V. Make it convenient and clear to check or maintain your vehicle circuits in a dark place. Which draw much less current than the incandescent lamp so it's less likely to damage sensitive circuits. - 【Quality Made And Heavy Duty】 Constructed with acetate fiber body, more toughness and shatter-proof than normal material. Large and heavy duty than other test lights on the market; sharp stainless steel probe for piercing wires and for hard to reach areas. - 【Portable Pu Spring For Easy Operation】 Portable high quality max extended to 140 inch long enough PU spring wire, compitable with large alligator clip for easy one-hand automotive circuits testing and also for convenient tool storage. - 【LONG TIME QUALITY SUPPORT】We always stand behind our products with lifetime customer satisfaction support, so click "Add to Cart" with confidence today. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077YM5QL8 | | Best Sellers Rank | #88,565 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #141 in Circuit Testers | | Brand | JASTIND | | Brand Name | JASTIND | | Color | White | | Compatible Devices | Cars, Trucks, Vehicles, Electronic Devices, Appliances (3-48V DC) | | Customer Reviews | 4.6 out of 5 stars 3,185 Reviews | | Item Weight | 140 Grams | | Manufacturer | Tianchang Zhaohong Instruments | | Measurement Type | Voltmeter | | Min. Operating Voltage | 3 Volts | | Minimum Operating Voltage | 3 Volts | | Model | 13 | | Part Number | JTCVT-01A | | Power Source | Battery Powered | | Specification Met | NIST, UL | | Style | Circuit Testers | | Style Name | Circuit Testers | | UPC | 682698800102 | ## Product Details - **Brand:** JASTIND - **Color:** White - **Item Weight:** 140 Grams - **Power Source:** Battery Powered - **Style:** Circuit Testers ## Images ![3-48V Digital LCD Circuit Tester w/ 140 Inch Extended Spring Wire & Probe | 3-48v Range, Accurate Backlight Digital Display, 140'' Extended PU Spring Wire, for Car Truck Low Voltage & Light Tester - Image 1](https://m.media-amazon.com/images/I/61uP4FymsKL.jpg) ## Questions & Answers **Q: Does this tester have high enough resistance to load a circuit while testing like a traditional incandescent test light?** A: To load (draw current) one needs a low resistance, not high. In this case I do not think the manufactures specifies the testers input resistance. It is an important factor for sure. **Q: We purchased ours on 3/10 and it has already stopped working. Is there any guarantee or offered replacement? Barely had a month...** A: dose not work how to replace **Q: Is it suppose tp have a fuse in it?** A: No fuse needed, the electronics in it work on the power when its connected to the power of whatever ur working on. **Q: Does it bave light and beeper?** A: No beep. Display only lights up ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great. *by B***E on April 30, 2026* Great item. ### ⭐⭐⭐⭐⭐ Excellent tool *by R***S on April 6, 2026* A standard test “light” will only confirm you have voltage present. This one tells you what that voltage is. I was able to determine voltage drop and find that a connection was corroded. So, it paid for itself right there in my eyes. ### ⭐⭐⭐⭐⭐ Test light/voltmeter *by P***I on May 4, 2024* Well, built, easy to use copper clamp, which is nice instead of the steel haven’t used it much but worked very well. Would definitely recommend good price only wish it was built in the USA other than that great product. ## Frequently Bought Together - Large Size Heavy Duty 3-48V Digital LCD Circuit Tester with 140 Inch Extended Spring Wire,Car Truck Low Voltage & Light Tester with Stainless Probe - JOREST 300Pcs Car Fuse Assortment Kit, 160 Mini Blade Fuses Automotive + 90 Standard Auto Fuses + 50 Micro + 1 Puller – for RV Camper Boat Accessories (2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A) - Premium LED Bulb Automotive Circuit Tester, 6-24V Test Light with 135 Inch PU Extended Spring Wire, Sharp Hard Steel Probe Vehicle Circuits Low DC Voltage Light Tester --- ## 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.us/products/54533127-3-48v-digital-lcd-circuit-tester-w-140-inch-extended](https://www.desertcart.us/products/54533127-3-48v-digital-lcd-circuit-tester-w-140-inch-extended) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-27*