Features:Brand New & High Quality.Function of checking your lipo cells voltageVoltage display function and low voltage alarm funtion.Use for 1-8s Lipo/Li-ion/LiMn/Li-Fe.Protect the battery from overcharging or overdischargingTest the working state of lithium batteryAutomatic protects against reverse connectionSpecifications: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 size: 9 * 5 * 4cm / 3.6 * 2 * 1.6inPackage weight: 52g / 1.8ozPackage list:5 * 1-8S Voltage Buzzer Alarm