Can I use it in Europe? 220V - 50 cycle

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.

What is meant by, "zero line", "fire-zero wire", "firewire" and "lack of land"? These are not standard terms.

Sorry. Those terms should be: neutral wire, live wire, the earth wire is missing.

How can it identify which of the 10 circuit breakers on my main panel an outlet has?

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 .

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester

ZT-E4 Outlet Tester with LCD Color Screen，3-Wire AC 120V Circuit Breaker Finder Tool,Receptacle Tester with Voltage Tester

Product ID: 551159128

Details

Brand
ZOTEK
Colour
Black
Item weight
110 Grams
Power source
Battery
Style
Outlet tester

⚡8 distinct outlet test result indicators

📺4.8x3.2cm vibrant LCD color screen

🔍Integrated 3-wire AC 120V circuit breaker finder

Description

⚡ Power Up Your Precision: See More, Test Smarter, Work Faster!

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.

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.

Specifications

ASIN	B0B218ZNK6
Brand	ZOTEK
Colour	Black
Compatible Devices	Any 120V electrical outlet
Customer Reviews	4.5 4.5 out of 5 stars (123)
Included Components	1×circuit tester，2×1.5V，1×user manual
Item Dimensions	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
Number of Items	1
Power Source	Battery Powered
Style Name	Outlet Tester，circuit tester
UPC	735550616516
Upper Temperature Rating	50 Degrees Celsius

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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