Simple to use Lipoly low voltage alarm that is small and light for on board use, plug's into balance lead for detecting low voltage on individual cells. A loud alarm will sound and LED will change from Green to Red if any individual cell drops to 3.3v or below.
Spec. Lipoly Range: 2s~4s Size: 38x25x11mm Weight: 7g Voltage Accuracy: 0.03v Low Voltage Alarm Threshold: 3.3v (per cell)
Great safety accessory. I have one permanently mounted on the arm of my Quad 450 with foam tape and a small cable tie. Buy several and connect to flight battery before you fly. Good loud alarm that can be heard several feet away.
Yes, if the GND lead doesn't have a potential over the other leads the alarm shuts off.
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I love this smal alarm system. Easy to fit and very safe. After connetion, it check every cell of your Lipo and the horn will be activated for a second. It is very loud and a nice working tool for more saftey.