Will it detect current by just being next to the wires?( or do you actually have to touch the wires with this device)

Current can be detected without touching any wires.

How to use for Christmas lights? I have separated the three wires and all 3 beep after every bulb showing power on all 3 wires but bulbs don’t light.

It will beep even though the the wires are dead. Test a lamp cord or something you know is hot. The beep should sound different than the beep you are hearing on the Christmas lights. Listen for that beep when you are testing the lights.

I have outlet that not sure if it is 110 or 220V, will this tester tell me?

Tester will NOT differentiate between 110V or 220V, but will tell you if the outlet is live.

Will it work on automotive circuits (12V DC)?

This one does not. Most non-contact testers work by listening for 60-Hz hum, and a DC circuit does not hum.

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⚡ Stay powered, stay safe — test smarter, not harder!

SMART ALARM SYSTEM - Visual yellow/red lights paired with low/high frequency beeps alert you instantly to voltage levels.
RELIABLE 36 MONTH SUPPORT - Backed by 3 years of technical assistance, keeping your workflow uninterrupted.
INTEGRATED WORKLIGHT POINTER - Illuminate dark spaces and pinpoint exact test spots with the built-in torch and red marker light.
PRECISION DUAL RANGE DETECTION - Switch effortlessly between 12V-1000V and 48V-1000V modes for versatile electrical testing.
SAFE NON CONTACT VOLTAGE SENSING - Detect live wires without touching, ensuring maximum safety on every job.

The VENLAB Voltage Tester is a professional-grade, non-contact electrical tester featuring dual voltage ranges (12V-1000V and 48V-1000V), a multi-level audible and visual alarm system, and an integrated torch for working in dim environments. Designed for safety and precision, it offers high/low sensitivity modes and comes with 36 months of technical support, making it an essential tool for electricians and managers who demand reliability and efficiency.

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