No longer do you need to wonder about your flight pack condition with this compact, low battery voltage alarm. Our Battery Buzzer warns you when you are getting close to the end of your flight and it is time to land. With a programmable voltage threshold, you decide how much advance warning you want when the alarm sounds. Not only does it protect your model from unexpected off-field landings, the Battery Buzzer also protects your battery from over-discharge, maximizing your investment. Both inexpensive and light weight, the Hitec Battery Buzzer is a must-have accessory for all your electric models.