ITEM NAME:2pcs Battery Voltage Tester Low Voltage Buzzer Alarm Battery Voltage Check #gib Store Home Promotion Hot Item Add to Fav.Quantity: 2pcs. 2 x Buzzer Alarm. The electric display screen is upwards. Plug the battery balance plug from the left and insert the black line (negative electrode) into the display. When the battery is low and alarm, do not continue to use the battery.
