Otter BS40A is an advanced brushless ESC for Airplane or Helicopter with optimum features.Works with 2 - 3 cell lipo and also have LED indicating brake/Timing modes, also switchable governor mode for helicopters, voltage cutoff and heat protection.
Specification:
Current: 40A
Battery: 2-3 Cell Lipo / 6-10 Cell Ni-XX
SBEC: 5V / 4A
Size: 53*24*13mm
Weight: 29g