What is the difference between fluke 2ac and fluke 1ac-a1-ii?

The 2ac is the newer model with an "always on" function. It has a button that is used only to ensure that it still has battery power. The 1ac is the older one that can be turned on or off. They both test for voltage presence the same way, but the 1ac has an audible alert function which the 2ac does not have.

What's the difference between the 1ac and the 2ac?

The 1AC has an audible alert and can be turned on or off.The 2AC stays on always and does not have an audible alarm.

can it be manually turned on without pressing the pocket hook

It doesn't turn off, it's always on. When it reads the electrical signal it glows, no sound or buzz.

Will it find AC behind drywall? Stud sensors are useless!

you could try using a toner kit. i think the proper term is wire tracer. the wand/probe can detect weak signals if you turn up the sensitivity. with some practice, you could use it to find ac wires behind drywall.

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2AC Alert Voltage Tester

Product ID: 1766823

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Details

Brand
Fluke
Power Source
Alkaline
Style
ACV DETECTOR
Color
White
Item Weight
10 Grams

⚡90-1000V non-contact detection

💡Tip glows on voltage detection

🔋Battery Check for reliable power

Description

⚡ Stay Powered, Stay Protected — The Voltage Tester That Never Sleeps

GLOW ON ALERT TIP - Instant visual voltage detection keeps you safe and confident on every job.
BATTERY CHECK ASSURANCE - Built-in battery health check ensures your tester never lets you down.
WIDE VOLTAGE RANGE DETECTION - Detects from 90 to 1000 V AC—perfect for residential, commercial, and industrial use.
VERSATILE PROFESSIONAL GRADE - Engineered for all environments, from home projects to heavy-duty industrial tasks.
VOLTBEAT TECH FOR ULTIMATE RELIABILITY - Continuous self-test means zero downtime—always ready when you are.

The 2AC Alert Voltage Tester features advanced Voltbeat technology with continuous self-testing, a glowing tip for instant voltage alerts, and non-contact detection from 90 to 1000 V AC. It includes a battery check function to guarantee readiness and is designed for versatile use across residential, commercial, and industrial settings.

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