This is the ultra precision version of the LiPo battery voltage tester by SMT Electronics Co., Ltd. This unit has high quality extra buzzer that you can hear from far away, high brightness LED digital diaply and push button selectable voltage detection level that helps protect your battery cells 2S to 8S. This is the original 2009 release model C23212 by INTEGY, built by AOKoda with special ordered precision parts. Item C23212 Barcode: 91789008103