ITEM NAME:RC Lipo Battery Low Voltage Alarm 1S-8S Buzzer Indicator Checker Tester LED F2K6 HOT SALE body .shopclass { float: left; width: 100%;.Use for 1-8s Lipl / Li-ion / LiMn / Li-Fe. 1 Buzzer Alarm. - Alarm set value range: OFF-2.7V-3.8V. AUD 4.02 8+ sold. AUD 14.79 10+ sold. You can follow below process to chontact us.