Item may not be exactly as shown as the manufacturer changes the covering frequently
Favourite 20A Four in One Brushless Electronic Speed Controller
ESC stands for Electronic Speed Controller. It is an electronic motor controller which controls the speed, direction and possibly braking of a motor.
BEC stands for Battery Eliminator Circuit. In radio control contexts, the BEC is extra circuitry on the ESC to provide power to the controls (such as steering, servos, receivers) to the controlled vehicle so that this control circuitry does not need to carry it's own battery pack. That is, it piggy backs on the battery pack used to drive the motors of the vehicle or in other words, the motor and servos share the same battery pack.
SBEC usually stands for Switching Battery Eliminator Circuit. SBEC's are improved versions of BECs as the circuitry uses batter power more efficiently.
ESC in the Quattro: 4 in 1
Output: continuous 20A, Burst 25A up to 10 seconds
Input voltage: 2-6 cells lithium battery or 5-12 cells NiCd/NiMh battery
BEC: 3.0A/ 5 V Switch mode BEC
Refresh Rate of the Throttle Signal: 50Hz to 432Hz
Weight: 93 grams
Four speed controllers in one board
Only 1 pair of battery wire needed
Safety arming feature: Throttle range can be claibrated to be compatible with different transmitters
Multiple program methods supported: transmitter stick, LED Program Card
Compatible with Lipo battery and NiMH battery
Internal timing can be changed to be suitable for different brushless motors
Full protection: Low voltage cutoff / over heat protection / throttle signal loss protection
Microprocessors use separate boltage regulator IC for better anti-jamming capability