XRotor 45A FPV 4in1 Competition level FPV's most powerful equipment20X20mm ultra-small mounting hole spacing design, further reducing size and weight.Combined with a new generation of 32-bit ARM F4 processor, the operating frequency is further increased to 120MHz. Specially tailored for competition level FPV!128KHz Dynamic PWMSupports 24K-128KHz PWM frequency, and can be dynamically adjusted adjusted for precision throttle control.Highly IntegratedWith a similar size of a FC, the 4IN1 ESC includes 4 high performance 45A BLHeli_32 DShot1200 ESCs, and a voltmeter which allows FC to monitor the amp & volt in real time. Two ways for connecting the ESC to a FC: 1) connecting via soft cables, 2) soldering via solder tabs are provided for selection. And the shock-absorbing design of mounting holes effectively reduces the external vibration’s impact on high-sensitivity components and provides great shock-absorbing protection to upper devices (i.e. FC). This ESC is designed for FPV racing.Support variety throttle modesSupport latest DShot mode. In this mode, the ESC has great anti-interference performance and rapid response.It also supports the regular PWM mode, Oneshot mode, Multishot modes, Proshot modes, and etc..BLHeli-32 Firmware ReadyThe ESC flashed with the 3rd-generation BLHeli-32 firmware has great performance & rich functions and supports adjusting parameters or upgrading firmware via different ways (i.e. via throttle signal wire with using other development board or a FC flashed with the Betaflight firmware).