More info
This great light weight product from Matek is a 3 in 1 gadget with LiPo Battery monitor, Discovery buzzer & Signal loss alarm functions with built in ultra bright LED and twin buzzers.
Specifications:
Working Voltage: 5.2~26V DC, 2~6Cells LiPo
Standby Current: < 10mA
Working Current: Max 120mA (blinking & beeping)
Voltage Threshold Setting: 3.4~3.7V per cell (Red LED)
Twin loud buzzers: 85db each
Ultrahigh Brightness LED: 20lm, 0.2w, Blue
Size: 20 x 30 x 6 mm,
Weight: ~7 g