Digital battery voltage checker 1-8s and alarm buzzer

Shows 1-8 cell battery cell voltages and whole pack voltage.

• Voltage detection precision: +-0.01V
• Voltage display range: 0.5-4.5V
• Total Voltage display rang: 0.5-36V
• 1S test mode voltage range: 3.7-30V
• Low Voltage alarm model for 2-8S
• Alarm set value range: OFF-2.7V-3.8V
• When the voltage is below the set value, it will buzzer with a red LED light.
• Pushing the setup button can change the voltage setting