This a great two in one tool that gives a loud alarm at low voltage and can quickly display battery voltage. Simply plug a 1s to 8s battery's balance connector into the voltage meter/buzzer. You will receive an instant readout of the total voltage and an individual reading of each cell.

Specifications

• Voltage detection accuracy: ± 0.01 V.
• Unit voltage display range: 0.5 V -- 4.5 V
• Total voltage display range: 0.5 V -- 36 V
• 1S test mode voltage range: 4-15V
• Low voltage buzzer alarm mode 2 s -- 8 s
• Alarm voltage set range: OFF ~ 2.7 ~ 3.8 V
• Size: 40 mm x 25 mm x 12 mm