Q: What is the internal circuit status of the ST-10B when connected to a multimeter?

Answer: The internal circuit is disconnected (by pass) and becomes a multimeter clamp

Question: Can ST-10B be used to measure 110V or 220V current or voltage after being connected to a multimeter/three-purpose ammeter?

Answer: It cannot be measured

Question: What kind of battery is the built-in battery of ST-10B?

Answer: 23A battery

Question: What is the polarity of the red handle? What is the polarity of the gray handle?

Answer: Red = anode/positive pole, gray = cathode/negative pole

Q: How many levels can I choose to light up the LED?

Answer: 3 levels (5mA, 10mA, 20mA)

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