The LiPo Cell Checker!#!amp!*!Low Voltage Alarm for 2-6s Lipo Battery FPV RC Multicopter lets you monitor real-time battery status? definitely a must-have for all RC fever fans! Built with low power MCU with 12-bit ADC? it tests the total voltage and cell voltage of 2-6 cells LiPo and LiFe battery packs with 1mV resolution. Twin buzzers loud as 85dB each notify you once the cells reach a user-defined voltage. Plus? you can have a clear view of current status on the LCD screen. Don¨t hesitate to get one!                                    Features             Designed to monitor real-time battery status<br> Low power MCU with 12-bit ADC<br> Test the total voltage and cell voltage of 2-6 cells LiPo and LiFe battery packs with 1mV resolution<br> Twin buzzers loud as 85dB each notify you once the cells reach a user-defined voltage<br> Large LCD screen offers you a clear view of current status<br> Low voltage alarm & threshold setting<br> The lowest cell voltage can also be recorded<br> Equipped with reverse polarity protection <br>                                                            Specifications             Working Voltage Range     5-27V DC    <br> Alarm Set Values     2.7-4.0V / Cell or OFF    <br> Voltage Resolution     1mV    <br> Voltage Precision     ＼0.25%    <br> Standby Current     Less than 10mA    <br> Pins Distacne     2.54mm    <br> Dimensions     (1.42 x 1.42 x 0.24)" / (3.6 x 3.6 x 0.6)cm (L x W x H)    <br> Weight     0.25oz / 7g       <br>                                                             Package Includes            1 x LiPo Cell Checker & Low Voltage Alarm<br>