What does turning the key to ACC mean?

[MacJune]

ACC position is the accessory power-on position. When the key is turned to this position, the accessory circuit will be connected, and devices such as the radio can be used. Here is some related information: 1. Keyhole: On the car keyhole, there are generally four switch positions: "LOCK", "ACC", "ON", and "START", along with the word "PUSH". "LOCK" is the steering wheel lock position, "ACC" is the position where the accessory circuit is connected, "ON" is the engine ignition switch position, and "START" is the engine start position. 2. Ignition switch: The ignition system's switch (usually requiring a key) can freely open or close the main circuit of the ignition coil and is also applicable to other electrical circuits. The ignition switch is commonly known as the master switch, master power switch, or master key, as it controls the main circuit system of the entire vehicle. It comes in two types: plug-in and rotary knob.