Simonk 40A 500Hz Firmware ESC w/ 5V 2A BEC for RC Multicopter / Helicopter - White (4 PCS)
Multiple protection features: over-heat protection / throttle signal loss protection. Throttle range can be configured and is fully compatible with all transmitters currently available. Specifications: Output: continuous 40A burst 58A up to 10 seconds. Input voltage:2-6cells Li-Po battery or 5-18 cells Ni-MH battery.