5PCS 1-8S RC Lipo Battery Voltage 2 in 1 Tester Low Voltage Buzzer BB Alarm
Use for 1-8S Lipo/Li-ion/LiMn/Li-Fe. (pre-set value is 3.3V). Am 17.08.21 hat der Verkäufer die folgenden Angaben hinzugefügt Really useful in flight if you can't see the lights. Alarm set value range:OFF~2.7~3.8V.