Product Description: Name: Hobby wing Brushless ESC Pentium-30A For: Aircraft and RC Helicopter Quantity: 1pc Specification Output: Continuous 30A, Burst 40A up to 10 Secs. Input Voltage: 2-4 cells lithium battery or 5-12 cells NiCd/NIMh battery. BEC: 2A / 5V (Linear mode). Max Speed: 210,000rpm for 2 Poles BLM, 70,000rpm for 6 poles BLM, 35,000rpm for 12 poles BLM. (BLM: BrushLess Motor) Size: 45mm (L) * 24mm (W) * 11mm (H). Weight: 25g. Features Safety Arming Feature: Regardless the throttle stick position, the motor will not spin after battery connected. Throttle Calibration: Throttle range can be configured to provide best throttle linearity, fully compatible with all market available transmitters. Programmable Items: o Brake Setting: brake enabled / brake disabled o Battery Type: Li-xx (Li-ion or LiPo) / Ni-xx (NiMh or NiCd). o Low Voltage Protection Mode (Cutoff Mode): Gradually reduce the output power / Cutoff the output power. o Low Voltage Cutoff Protection Threshold (Cutoff Threshold): low / medium / high. o Start Mode: normal / soft / very soft. o Timing: low / medium / high. o Reset: reset all the programmable items to its default setting Full Protection Features: Low voltage cutoff protection / over-heat protection / throttle signal lost protection. Advantages Military standard capacitor with extreme low resistance is used at voltage input section, this will increase the ability of prevention of unwanted RF Noise/ Interference during flying.