Place it on the your aircraft, it will warn you when to land the helicopter, very useful for all helicopter flyers

Use for 1-8S Lipo/Li-ion/LiMn/Li-Fe

Voltage detection precision: +_0.01V

Unit voltage display range: 0.5~4.5V

Total voltage display range: 0.5~36V

1S test mode voltage range: 4-15V

Low voltage alarm mode for 2-8S

Alarm set value range:OFF~2.7~3.8V