Name: Combination Low Voltage Buzzer Alarm For: 1S-8S Lipo/Li-ion/LiMn/Li-Fe Quantity: 1pcs Setting method: push the side button, choose the alarm Voltage is ok, for example, if want to lower than 3.7V will alarm, just need to set the 3.7V is ok. Specification: 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 Buzzer alarm mode for 2-8S Alarm set value range:OFF-2.7V-3.8V When the voltage is below the set value,it will buzzer with red LED light,pre-set value 3.3V,Push key which can change the voltage settings and save 100%Brand New Brand No Brand SKU OT776EL19XF84NAFAMZ-184997