Feature:1. Real Time Detection: The alarm detects the discharge voltage of each battery of the lithium battery pack in real time.2. Sound and Light Warning: When any battery voltage is lower than 3.0V, the alarm will sound and the light will flash, double reminding.3. Life Prolonging: The alarm reminds you to replace the battery and charge in time, prevents over discharge, effectively protecting the service life of the battery pack.4. Small and Light: Using precise IC, all components are SMD, small size and light weight, suitable for any aircraft, vehicle and ship models, without adding additional burden.5. Applicable Battery: The low voltage alarm is suitable for all 2S to 3S lithium battery packs, with perfect compatibility.Specification:Item Type: Lithium Battery Low Voltage AlarmMaterial: PCB.Package List:5 xLithium Battery Low Voltage Alarm