--- product_id: 551159128 title: "ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester" brand: "zotek" price: "0 zł" currency: PLN in_stock: false reviews_count: 5 url: https://www.desertcart.pl/products/551159128-zt-e4-outlet-tester-with-lcd-color-screen-3-wire store_origin: PL region: Poland --- # 8 distinct outlet test result indicators 4.8x3.2cm vibrant LCD color screen Integrated 3-wire AC 120V circuit breaker finder ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester **Brand:** zotek **Price:** 0 zł **Availability:** ❌ Out of Stock ## Summary > ⚡ Power Up Your Precision: See More, Test Smarter, Work Faster! ## Quick Answers - **What is this?** ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester by zotek - **How much does it cost?** 0 zł with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/551159128-zt-e4-outlet-tester-with-lcd-color-screen-3-wire) ## Best For - zotek enthusiasts ## Why This Product - Trusted zotek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Voltage Tester Included:** Stay ahead of electrical hazards with integrated voltage detection for full-spectrum outlet analysis. - • **Crystal-Clear LCD Display:** Instantly visualize outlet status with a sharp 4.8x3.2cm color screen—no guesswork, just clarity. - • **Compact & Lightweight Design:** At just 110g and pocket-friendly dimensions, carry professional-grade testing wherever your projects take you. - • **Built-In Circuit Breaker Finder:** Pinpoint breakers effortlessly with advanced A/D converter tech—save time and avoid costly errors. - • **Comprehensive 8-Result Diagnostics:** Know exactly what’s up with your socket—8 precise test results ensure foolproof electrical safety checks. ## Overview The ZT-E4 Outlet Tester by ZOYI is a cutting-edge electrical testing tool featuring a vibrant 4.8x3.2cm LCD color screen that clearly displays 8 distinct outlet test results. Designed for professionals and DIYers alike, it integrates a 3-wire AC 120V circuit breaker finder and voltage tester in a compact, lightweight package. Engineered with advanced A/D conversion technology, this tester ensures accurate diagnostics and efficient troubleshooting, making it an essential device for anyone serious about electrical safety and precision. ## Description The manufacturer of ZOYI&ZOTEK has been committed to the production of digital multimeters since 1984 and adhered to the principle of independent research and development all the way to today. After 39 years of persistence and training, the company has more than 100 models with independent intellectual property rights and patents. Products, its products include: smart multimeter series, intelligent voice control digital multimeter series, Bluetooth APP multimeter series, oscilloscope multimeter series, clamp meter series, infrared thermometer series, socket tester series, voltage tester series, coating thickness gauge series and other products to meet various user groups. We have been adhering to the idea of ​​"seeking common ground while reserving differences and common development", insisting on "quality-oriented, creating a win-win situation" as the foundation to contribute our own strength to the majority of measurement and testing users, and "making measurement more effective" is our goal which is also the direction we have been working hard for.-------------------------------------------ZT-E4 R&D background: Why can't the socket tester be used to have a big screen? Why can't the detection results be displayed intuitively to the user? Aren't tools for the convenience of the user? How to display test results? Make the measurement more effective - the test results are easy for users to view at a glance. ZT-E4 went through six months of research and development and testing from January 2020 to June 2020 and officially went offline to meet with users. Review: Excellent Outlet Tester - This is an outlet tester that is a must have tells you if outlet is wired correctly just by plugging it in. Great for electrical inspections. tells you a lot. if outlet is wired wrong, GFCI is working, if there is a power leakage, and if there is power at the outlet. and how many volts. It is very accurate. I have three of them. First one I got was in December 2023 still going strong. A very handy tool to have. I have tested this with my KLEIN my AMPROBE and FLUKE Meters. Review: Easy to Use and Understand Readings, A Few Things Would Make the Zotek Tester Even Better - The product is a good deal for $19. It's easy to use and easy to understand test results. However, the little folded instruction sheet is in such a small font that you need a good magnifying glass to read it. The instructions say to open the back cover and insert two 1.5V AAA batteries before using. The desertcart product literature also tells you that batteries are required. The instructions and the desertcart product info neglect to mention that the two batteries already come in the product. There is NO SEPARATE BATTERY COMPARTMENT. You have to unscrew the back cover and GENTLY pull it off, as wires attach the front with the circuit board and batteries to the back cover with the wall plug. The wires are not long enough to cleanly pull the back cover out of the way of the batteries. I always read and record alkaline batteries' voltage and change them out when the voltage gets low to avoid leakage and corrosion. It's very awkward to do with this product - the wires should be longer. In trying to measure voltage for the limited distance I could remove the cover, one of my leads slipped and touched both a battery terminal and the circuit board. I thought I'd fried the circuit board. The product wouldn't turn on with the cover on again. I opened the cover and replaced the batteries. That must have rebooted the device since it's worked well after that. It's too bad for all the nifty circuit detective electronics in the Zotek device that they don't display internal AAA battery status on the lovely LCD screen; it would be even better if such an indicator displayed the AAA battery voltage. It's very awkward to have to unscrew the back cover, pry the device apart, and take the batteries out to test voltage (to avoid slippery probe accidents like the one I had). Overall, I'm very happy with my purchase. I just don't look forward to checking battery voltage. I replaced the alkaline batteries with much more expensive Energizer single-use lithium AAA batteries. They don't leak even when dead and have a 20-year shelf life. So I'll only have to open the Zotek tester when my Li AAA batteries die, but two such batteries are ~25% of the cost of the Zotek tester! ## Features - Socket tester：4.8 3.2CM color screen, the test results are clearly displayed on the screen - Electrical outlet tester with 8 test results display - Outlet tester with gfci Equipped with voltage tester function - circuit breaker finder：A combination of a new A/D converter and design scheme - International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B218ZNK6 | | Brand | ZOTEK | | Colour | Black | | Compatible Devices | Any 120V electrical outlet | | Customer Reviews | 4.5 out of 5 stars 120 Reviews | | Included Components | 1×circuit tester，2×1.5V，1×user manual | | Item Dimensions | 8 x 8 x 7.2 centimetres | | Item Weight | 110 Grams | | Item dimensions L x W x H | 8 x 8 x 7.2 centimetres | | Item weight | 110 Grams | | Manufacturer | ZOYI | | Manufacturer Part Number | ZT-E4 | | Maximum Operating Voltage | 120 Volts | | Measurement Type | outlet tester non contact voltage tester | | Minimum Operating Voltage | 120 Volts | | Model Number | ZT-E4 | | Power Source | Battery Powered | | Power source | Battery Powered | | Style | Outlet Tester，circuit tester | | Style Name | Outlet Tester，circuit tester | | UPC | 735550616516 | | Upper Temperature Rating | 50 Degrees Celsius | ## Product Details - **Brand:** ZOTEK - **Power source:** Battery Powered - **Style:** Outlet Tester，circuit tester - **Colour:** Black - **Item weight:** 110 Grams ## Images ![ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester - Image 1](https://m.media-amazon.com/images/I/61wxIw8pyFL.jpg) ![ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester - Image 2](https://m.media-amazon.com/images/I/61Uqu4sIsZL.jpg) ![ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester - Image 3](https://m.media-amazon.com/images/I/61rOLGyAu1L.jpg) ![ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester - Image 4](https://m.media-amazon.com/images/I/6183Aj+v+NL.jpg) ![ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester - Image 5](https://m.media-amazon.com/images/I/614Z3RwOtiL.jpg) ## Questions & Answers **Q: Can I use it in Europe? 220V - 50 cycle** A: Thank you very much for your attention. We are the manufacturer of the product. The product you inquired about: E4, which is American standard and not applicable to European standard, but our company has E2 product for European standard, but we are sorry that we have not launched it in the European Amazon market. **Q: What is meant by, "zero line", "fire-zero wire", "firewire" and "lack of land"? These are not standard terms.** A: Sorry. Those terms should be: neutral wire, live wire, the earth wire is missing. **Q: How can it identify which of the 10 circuit breakers on my main panel an outlet has?** A: To quickly find the circuit breaker corresponding to the socket: please turn off all electronic equipment in use, then press the "RCD TEST" button, and check which circuit breaker is disconnected to confirm the connection between the socket and the circuit breaker . ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent Outlet Tester *by C***R on 12 July 2025* This is an outlet tester that is a must have tells you if outlet is wired correctly just by plugging it in. Great for electrical inspections. tells you a lot. if outlet is wired wrong, GFCI is working, if there is a power leakage, and if there is power at the outlet. and how many volts. It is very accurate. I have three of them. First one I got was in December 2023 still going strong. A very handy tool to have. I have tested this with my KLEIN my AMPROBE and FLUKE Meters. ### ⭐⭐⭐⭐⭐ Easy to Use and Understand Readings, A Few Things Would Make the Zotek Tester Even Better *by J***S on 25 January 2024* The product is a good deal for $19. It's easy to use and easy to understand test results. However, the little folded instruction sheet is in such a small font that you need a good magnifying glass to read it. The instructions say to open the back cover and insert two 1.5V AAA batteries before using. The Amazon product literature also tells you that batteries are required. The instructions and the Amazon product info neglect to mention that the two batteries already come in the product. There is NO SEPARATE BATTERY COMPARTMENT. You have to unscrew the back cover and GENTLY pull it off, as wires attach the front with the circuit board and batteries to the back cover with the wall plug. The wires are not long enough to cleanly pull the back cover out of the way of the batteries. I always read and record alkaline batteries' voltage and change them out when the voltage gets low to avoid leakage and corrosion. It's very awkward to do with this product - the wires should be longer. In trying to measure voltage for the limited distance I could remove the cover, one of my leads slipped and touched both a battery terminal and the circuit board. I thought I'd fried the circuit board. The product wouldn't turn on with the cover on again. I opened the cover and replaced the batteries. That must have rebooted the device since it's worked well after that. It's too bad for all the nifty circuit detective electronics in the Zotek device that they don't display internal AAA battery status on the lovely LCD screen; it would be even better if such an indicator displayed the AAA battery voltage. It's very awkward to have to unscrew the back cover, pry the device apart, and take the batteries out to test voltage (to avoid slippery probe accidents like the one I had). Overall, I'm very happy with my purchase. I just don't look forward to checking battery voltage. I replaced the alkaline batteries with much more expensive Energizer single-use lithium AAA batteries. They don't leak even when dead and have a 20-year shelf life. So I'll only have to open the Zotek tester when my Li AAA batteries die, but two such batteries are ~25% of the cost of the Zotek tester! ### ⭐⭐⭐⭐⭐ Shows important info *by M***C on 30 October 2024* Powers on and shows proper connection, what's missing and voltage between hot - neutral and neutral - ground. Helpful info for checking all proper aspects. Also does ncv test. Just be careful of the GFCI test button. ## Frequently Bought Together - Socket Tester, Plug Tester for Electrical outlets,ZT-E4, Leakage Detector with GFCI Test, Electrical Circuit Tester for Quick and Safe Wiring Diagnosis - ZOYI ZT-DB03 AC Voltage Detector - Non-Contact Voltage Tester Pen, Adjustable Sensitivity, Electricity Tester, Live Wire Tester, Electrical Tester Pen, 12-1000V - Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical Receptacles --- ## 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.pl/products/551159128-zt-e4-outlet-tester-with-lcd-color-screen-3-wire](https://www.desertcart.pl/products/551159128-zt-e4-outlet-tester-with-lcd-color-screen-3-wire) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-27*