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White rectangular US-plug outlet tester with colour LCD screen and indicator lights

YOJOCK Outlet Tester GFCI LCD 90-250V CAT II 300V US Plug

SKU CH-DDMF-ZJ00B

Tests 90-250V US outlets for wiring faults and GFCI function with color LCD voltage readout

  • Team affiliation1 Piece
  • Key featuresOutlet Tester, Cat.ii 300v, Ce, Corded Electric, false
  • Product weight0.1 kg
  • Product typeVoltmeter
  • Detects wiring faults on 90-250 V AC outlets
  • Colour LCD shows voltage and polarity at a glance
  • Six visual indicators identify common wiring issues instantly
  • One-button GFCI trip test verifies breaker operation
  • CAT II 300 V rating for safe measurement use

US Plug Outlet Tester with LCD

The YOJOCK outlet tester plugs directly into standard three-wire and GFCI-protected 90-250 Volt AC receptacles. A colour LCD screen and LED indicators show wiring status and actual voltage at a glance. The device weighs .1 kilograms and carries a CAT II 300V safety rating. It is built for electricians and DIY users who need quick circuit verification.

Suits socket checks not full installations

This tool suits anyone confirming outlet polarity, voltage presence or GFCI trip function on existing wiring. It does not suit buyers who need a full installation tester with loop-impedance or RCD timing measurements. It also does not suit users who require non-contact voltage detection or continuity testing on de-energised cables. The six visual indications cover common wiring faults only.

Sustained use stays within CAT II limits

Under continuous load the tester remains within its CAT II 300V classification, so repeated checks on live circuits do not exceed the rated insulation level. The LCD and LEDs draw minimal current, so the unit does not heat up during extended troubleshooting sessions. One-click GFCI testing trips the breaker only when leakage exceeds 5mA, protecting the household wiring from unnecessary interruption.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $26.99
Cheaper than about 58% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameYOJOCK
Product typeVoltmeter
Size & build
Product weight0.1 kg
More details
Team affiliation1 Piece

Questions about this item

Does the YOJOCK outlet tester need any batteries or external power to operate?

No, it draws power directly from the 90-250V AC outlet you are testing, so nothing else is required.

Can I safely use the GFCI test button on a standard non-GFCI receptacle in an older house?

Be cautious; pressing the GFCI button on a regular receptacle may trip the household wiring system, so only use it on GFCI-protected circuits.

How do I know the tester is working correctly after I plug it in?

The color LCD will show the actual voltage and a green indication for correct wiring or orange for one of the six detected wiring faults.

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