Buck module undervoltage alarm box

可用于多串锂电池的降压模块报警器可在低电压时报警避免电池过放等问题。主模块链接：https://item.taobao.com/item.htm?id=615293569916&mi_id=0000a45S9mUYhmVsmkdBI7jalfxN0GxRnhWdiKHnAbRIT9s&spm=tbpc.boughtlist.suborder_itempic.d615293569916.312f2e8d8GbhTT电压报警模块链接：https://item.taobao.com/item.htm?id=537767919770&mi_id=00003dNZ_h_8tpgxrL65J3XzqhnyHrlUFsSXMZXFMSlAM8U&spm=tbpc.boughtlist.suborder_itempic.d537767919770.312f2e8d8GbhTT 使用M6接线柱上壳可使用M3自攻螺丝