Wireless Batterie's Voltage Tracker 1. Measures lipo voltage continuesly 2. MAX range distance: 200m 3. Supports 2-6 cells Lipo pack 4. Measures lipo voltage on each cell 5. 2.8V-3.0V red light (buzzer on) 6. 3.0-3.5V transition between red and green light 7. 3.5V-4.2V green light