When measuring 12A “hot,” the meter’s internal shunt resistance creates a burden voltage. If this is too high, it can drop your circuit voltage below operational levels. The manual provides this spec (typically <0.04 V/A).
The Metex M 4650CR is a multifunctional electronic component designed to cater to a wide range of applications. While specific details about its manufacturer and the exact nature of the component might be scarce, its popularity underscores its utility and performance in various electronic circuits.