Features: Solid performing,Super compact, lightweight, high performance speed controller for your racing multi-rotor. Pre-flashed with BLheli and ready to use The OCDAY 30A Mini OPTO 2-6S Lipo ESC Electronic Speed Controller is exactly what you are looking for in a light weight, reliable and very affordable speed controller. OPTO ESC Based on BLHeli firmware, further optimized to the perfect drive performance Low-voltage protection, over-heat protection and throttle signal loss protection Support Damped mode, Oneshot125, Oneshot42 and Multshot Switching speed is very fast, it has dedicated driver chip BLHeli_S Bootloader & Firmware Specifications: Item name: 30A ESC Input Voltage: 2-6 S Lipo Output BEC: No Continue Current: 30A Burst Current: 35A to 10S Main IC: SILABS EFM8BB21F16, MCU run 48MHz MOS: Both low and high side fets are Nfets Size: 35 x 12 x 5mm Net Weight: 7.9g Package Included: 1 x OCDAY 30A Mini 2-6S ESC