The T-Motor AT 20A is a fixed wing ESC supporting 2-3S input, programmable parameters and a build in 5V 2A BEC. The AT series adopt a dedicated fixed wing core algorithm to optimise the output for high efficiency.  The ESCs can be used with both LiPo and NiMH battery types, changeable via settings.
See the T-Motor Site for Manual https://store.tmotor.com/goods.php?id=976
Features:
- Model: T-Motor AT 20A
- Input Voltage: 2-3S LiPo, 5-9cells NiMH
- 20A continous current
- 25A burst current < 10s
- BEC Type: Linear 5V 2A
Dimensions: 42mm x 25mm x 8mm
Includes:
- 1x T-Motor AT 20A ESC for Fixed Wing