PM3C li-poly monitor used in checking each cell's voltage in the pack. Plug the kits to your battery pack's balance connector, if all cell's voltage is more than 3.4v,the LED light GREEN. After you discharge the battery in flying or running. when one cell's voltage drop down at 3.4v,the correct LED turn RED. You can get this message and prepare to land for protect your Li-poly battery. No one cell's voltage below 3.0v means your pack's life can get longer. PM3C Specification：
 WEIGHT：1.9g
SIZE:28.5 x 15 x 4.6mm
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