The 3~8s lipoly voltage detector is very accurate and easy-to-use. It will give a warning buzzer as well as LED indication for High, Average, Below Average, and Low voltages on your lipoly battery. It is very small and weighs just 6g -- it features a loud, easy-to-hear warning buzzer. Its varied warning range is great for those with gliders that need time to bring the plane down from a high altitude.
Built-in polarity protection.
Operating Voltage : 9~33.6V