ITEM NAME:MagiDeal 1 8S LED Low Voltage Buzzer Lipo Voltage For Aircraft Description: 2pcs RC Lipo Battery Monitor Alarm Tester Checker Low Voltage Buzzer Alarm with LED Indicator for 1-8S Lipo LiFe LiMn Li-ion Battery Test the working state of lithium battery. Protect the battery from overcharging or overdischarging Compatible for 1-8S Lipo/ Li-ion/ LiMn/ Li-Fe battery. The pin space is about 3mm (0.12inch). Straight pin Material: Plastic, metal Color: Black Size Chart: Size: Approx. 4 x 1 x 2cm/ 1.57 x 0.39 x 0.78inch Package Includes: 2 Pieces Voltage Buzzer Alarm SKU: DMO0015872261009651.Compatible for 1-8S Lipo/ Li-ion/ LiMn/ Li-Fe battery. Straight pin. SKU: DMO0015872261009651.