1. Automatic recovery protection. Some watch circuitry, when an overload is detected, protects the watch until the condition no longer exists. After the overload is removed, the DMM automatically returns to normal operation. Usually used to protect the resistive function from voltage overload.
2. There is no automatic recovery function. Some watches will protect the watch after detecting overload, but it will not recover automatically until the user takes corresponding measures, such as replacing the resistor, to resume use.
