DC resistance: refers torelayThe DC resistance of the middle coil can be measured using a multimeter.
　　
Rated working voltage: refers torelayThe voltage required by the coil during normal operation, which is the control voltage of the control circuit in the circuit diagram. according torelayThe model is the same, it can be AC voltage or DC voltage.
　　
Pull in current: refers torelayThe smallest current capable of generating suction action. During normal use, the given current must be slightly greater than the pull in current, so thatrelayIn order to work stably. For the working voltage applied to the coil, it generally needs to exceed 1.5 times the rated working voltage, otherwise it will generate a large current and burn out the coil.
　　
Contact switching voltage and current: refers torelayAllowable voltage and current for loading. It determinesrelayCan control the magnitude of voltage and current, can exceed this value when in use, otherwise it is easy to damagerelayThe touchpoints.
　　
Release current: refers torelayGenerate the largest current for release action. whenrelayWhen the current in the suction state decreases to a certain degree,relayIt will return to the released state without power supply. At this point, the current is much smaller than the pull in current.