Description: Professional for Teenypro 5A 4 In 1 BLHeli_S ESC Brushless ESC Speed Controller 1-2S. Top quality components to get strong current endurance. Regardless the throttle stick position, the motor will not spin after battery connected. Low voltage cut off protection / Over-heat protection / Throttle signal lost protection. Throttle range can be configured to provide best throttle linearity. Specification: Material: Plastic Size: 23x27mm (includes solder pad) Mounting holes: 16x16mm, ?2mm Weight: 2.1g Input voltage: 1-2S Lipo battery Con. Current: 5A Peak Current: 7A (5S) Firmware: BLHELI_S Processor: SILABS EFM8BB21F16G Support: Dshot150 Dshot300 Dshot600 Oneshot125 Multishot PWM Firmware target: BLHeli_S S_H_50_REV16_7 Package Includes: 1 x Teenypro 5A 4in1 ESC 4 x M2 x 5+5 Nylon column 4 x M2 Nuts 4 x M2 Screw Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thank for your understanding