BL-RS4B Brushless Speed Controller

　The BL-RS4 features the same programming as the BL-PRO4 but comes in a fanless design for motors down to 5.5T, offering a more reasonable price point. It allows for detailed settings such as boost adjustment based on RPM and throttle position, turbo delay and slope adjustments, and even individual frequency settings for various brake operations, making it adaptable to a wide range of driving styles. 　The housing utilizes a full aluminum case with high cooling efficiency for heat management, boasting the durability required for demanding race conditions. 　While program changes can be made using a separately sold dedicated programmer, installing the optional Wi-Fi module (BL-WM, ●4,700) now allows for remote control via a smartphone app. In addition to changing programs while viewing the screen, users can visualize post-run data in graphs, and future ESC updates are also planned to be supported. SPECIFICATION Supported Motors: Brushless 5.5T (8.5T when using turbo function; 8.5T or higher recommended for drift driving) Input Voltage: NiCd/NiMH: 4–6 cells, LiPo/LiFe: 1–2 cells BEC Voltage: 6.0V/3.0A (7.4V/3.0A when BEC boost is set) Case Size: 32.9×34.6×21.0mm (excluding protrusions) Weight: 50g (unit only)