ITEM NAME:5X 1-8S Indicator RC Lipo Battery Tester Low Voltage Buzzer Alarm A5T4 5X 1-8S Indicator RC Lipo Battery Tester Low Voltage Buzzer Alarm A5T4 Brand New & High Quality. Function of checking your lipo cells voltage Voltage display function and low voltage alarm funtion. Use for 1-8s Lipo/Li-ion/LiMn/Li-Fe. Protect the battery from overcharging or overdischarging Test the working state of lithium battery Automatic protects against reverse connection Voltage detection pricision: 0.01V. Unit voltage display range: 0.5V-4.5V. Total voltage display range: 0.5V-36V. 1S test mode voltage range: 3.7v-30v. Low voltage alarm mode for 2-8S. Alarm set value range: OFF-2.7V-3.8V. When the voltage is below the set value,it will buzzer with red LED light,pre-set value 3.3V.Push key which can change the voltage settings and save. Package list:RM1569 5 * 1-8S Voltage Buzzer Alarm Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.