Easy to use: Just plug in the scale and the LED will cycle through the voltages of each cell and show the total voltage Widely applied for 1-8S RC LiMn Li-ion Lipo Battery Life Dual sound alarm er perfectly protects your battery from over-discharge to over-discharge Able to configure from 2.7 to 3.8 V per cell, or you can also disable the alarm What you get: 4* LiPo Battery Checker Features: Easy to use: just plug in balance plug LED cycles through individual cell voltages and shows total voltage Widely applied for Li-ion LiMn battery LiMn Life 1-8S RC Dual alarm buzzer protect your battery perfectly from over-discharge over-discharge What you get: 4pcs LiPo Battery Checker Specification: Weight: 14g Size: 40*30*14mm Display: LED Voltage Detection Accuracy: 0.01V Unit voltage display range: 0.5-4.5V 1S test mode voltage range: 3.7-30V Low voltage alarm mode for: 1-8S Alarm set value range: OFF-2.7- 3.8V Package includes 4* LiPo Battery Checker