--- product_id: 103195973 title: "Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V" brand: "sid led" price: "€ 89.59" currency: EUR in_stock: true reviews_count: 8 category: "Sid Led" url: https://www.desertcart.be/products/103195973-multipurpose-tester-for-led-tv-backlight-and-constant-current-driver store_origin: BE region: Belgium --- # 0-330V adjustable output 0-150mA current range Universal LED compatibility Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V **Brand:** sid led **Price:** € 89.59 **Availability:** ✅ In Stock ## Summary > ⚡ Empower your LED repairs with precision and confidence! ## Quick Answers - **What is this?** Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V by sid led - **How much does it cost?** € 89.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/103195973-multipurpose-tester-for-led-tv-backlight-and-constant-current-driver) ## Best For - sid led enthusiasts ## Why This Product - Trusted sid led brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safe Polarity Testing:** No burn out risk when testing single LEDs with wrong polarity—protect your components effortlessly. - • **Compact & Complete Kit:** Includes probes, cables, and carrying bag—ready for professional-grade LED repairs anywhere. - • **All-in-One LED Diagnostic Tool:** Test LED strips, panels, single beads, COB lights, and TV backlights with one device. - • **Real-Time Circuit Health Check:** Instantly identify open/short circuits and verify constant current driver boards with stable readings. - • **Precision Voltage & Current Control:** Manually adjust voltage (20-330V) and current (20-150mA) for tailored LED testing. ## Overview The SID LED KT4H Multipurpose Tester delivers adjustable 0-330V DC output and 0-150mA current range, enabling real-time testing of LED strips, panels, single beads, COB lighting, and TV backlights. Designed for professionals, it ensures safe polarity testing, accurate voltage/current measurement, and compatibility with all LED types, making it an essential tool for efficient LED diagnostics and repairs. ## Description Product model: KT4H Vin: AC 85-265V Vout: DC 0-330V (Automatic + Adjustable) Voltmeter Accuracy: 30V, Current >30mA and keep stable, and the LED strip working normal, then the Constant current board is normal. Review: Very useful - It's very simple to use, solve me a lot, now I can check led strings an also verifies tv's led strip Review: Excelente producto - Excelente producto. Mejor de los que esperaba. Sus puntas bien finas y protegidas. Estuche, probador y todos los cables llegaron en excelentes condiciones. Se comprobó su funcionamiento ## Features - Real-time testing voltage and current of constant current drive board. - Testing LED strips, LED panels, single LED bead, COB lighting sources, backlight of LED TV, displays, computers and so on. - Testing voltage parameter of various of electronic components;Testing LED light on vehicle. - No burn out when testing single LED bead with wrong polarity. (Set voltage around to 20V and the current switch to 1mA) - Compatible with all the LED strips (high voltage or low voltage). Manual adjusting the range of testing voltage (20-330V/DC) and current (20-150mA). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07MT87G2P | | Best Sellers Rank | #157,578 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #229 in Multi Testers | | Brand | SID LED | | Brand Name | SID LED | | Color | Black, Red | | Compatible Devices | LED strips, LED panels, single LED beads, COB lighting sources, LED TV backlights, displays, computers, vehicle LED lights, constant current driver boards | | Customer Reviews | 4.7 out of 5 stars 292 Reviews | | Included Components | LED tester,Test probe,power cord,User Manual,socket cable,connection clip,bag | | Manufacturer | SID LED | | Measurement Type | Ammeter, Voltmeter | | Model | KT4H | | Part Number | 613739727430 | | Power Source | Corded Electric | | Style | Electronic | | Style Name | Electronic | | UPC | 613739727430 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 40 Degrees Celsius | ## Product Details - **Brand:** SID LED - **Color:** Black, Red - **Power Source:** Corded Electric - **Style:** Electronic - **Upper Temperature Rating:** 40 Degrees Celsius ## Images ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 1](https://m.media-amazon.com/images/I/61VSfBEgE3L.jpg) ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 2](https://m.media-amazon.com/images/I/51V5DiSmF+L.jpg) ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 3](https://m.media-amazon.com/images/I/616nGVpbpcL.jpg) ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 4](https://m.media-amazon.com/images/I/41RmoB0d8dL.jpg) ![Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Image 5](https://m.media-amazon.com/images/I/61qvhig--EL.jpg) ## Questions & Answers **Q: will this work on my 70 inch flat screen 110-240v-50/60 Hz, 220w usb, Dc 5v- 500mA?** A: Yes ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very useful *by F***Y on July 3, 2024* It's very simple to use, solve me a lot, now I can check led strings an also verifies tv's led strip ### ⭐⭐⭐⭐⭐ Excelente producto *by M***Z on July 4, 2026* Excelente producto. Mejor de los que esperaba. Sus puntas bien finas y protegidas. Estuche, probador y todos los cables llegaron en excelentes condiciones. Se comprobó su funcionamiento ### ⭐⭐⭐⭐⭐ It worked for my TV *by P***G on March 9, 2025* I bought this to test and repair a LG led tv. It worked great for testing the existing led's. I also used this to test some single led's from a grow light. Found the bad 1 quickly and replaced it. ## Frequently Bought Together - SID LED Multipurpose Tester for LED TV Backlight and Constant Current Driver Board Used in All LED Lights Repair Output 0-330V - Super Strong Suction Cup LCD LED TV Screen Panel Removal Tool (Set of 2) - TKDMR LED Lamp Bead TV Backlight Tester - for All LED Lights Repair Output 0-300V (0-300V 30mA) --- ## 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.be/products/103195973-multipurpose-tester-for-led-tv-backlight-and-constant-current-driver](https://www.desertcart.be/products/103195973-multipurpose-tester-for-led-tv-backlight-and-constant-current-driver) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-24*