SMAKNÂ 1-8S Battery Checker and Low Voltage Buzzer Alarm Plus BlueMart Cable Tie
Specifications:
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: 3.7-30V
Low voltage alarm mode for 2-8S
Alarm set value range: Off-2.7-3.8V