2.1 Safety Arming Feature: Regardless the throttle stick position, the motor will not spin after battery connected. * 2.2 Throttle Calibration: Throttle range can be configured to provide best throttle linearity, fully compatible with all market available transmitters * 2.3 Programmable Items:Brake Setting: brake enabled / brake disabled. Battery Type: Li-xx(Li-ion or LiPo) / Ni-xx(NiMh or NiCd) * 2.4 Full Protection Features: Low voltage cutoff protection / Over-heat protection / Throttle signal lost protection * 2.5 Compatible with Hobbywing"s Pentium Series Program Card