HC-SR04 Ultrasonic Wave Detector Ranging Module Sensor hc sr04 for Arduino Distance Sensor

HAKRC BLHeli_32 Bit 35A 2-5S ESC Built-in LED Support Dshot1200 Multishot for FPV RC Drone

Specification:
Brand name: HAKRC
Item name: 35A  ESC built-in LED
MCU: STM32F051
Firmware: BLHeli_32 bit
Con. current: 35A
Size: 26x13x5mm
Weight: 7g
Input voltage: 2-5 cell liPo
PCB: 3OZ copper, Gold-plated
Built-in LED, switchable color (red, green, blue, yellow, white, magenta, blue-green)

Features:
-Support 500HZ PWM, Oneshot125, Oneshot42, Multishot, Dshot150/300/600/1200.
-With prompt tone, can determine drone's position by the ESC prompt tone. Players also can choose their favorite BGM as the power start-up tone. 
-Support 3D mode and automatic motor timing.
-More function settings, Support CleanFlight, BetaFlight settings.