Features: Adopts switching power supply structure with a 300kHz frequency main control chip, providing overcurrent and over-temperature protection functions, achieving up to 92% chip efficiency. Compact size and lightweight design; switchable 5V/6V output. Electronic components are shielded, and the output line includes a magnetic ring to reduce electromagnetic interference and ensure stable receiver operation. Includes reverse polarity protection; if the power supply is accidentally reversed, the UBEC will not be damaged. Equipped with an LED status indicator that lights up when output is normal. Specifications: Material: ABS Length: approximately 43mm (1.69 inches) Output Capacity: 5V/3A or 6V/3A (switchable via jumper cap) Power Input: 5.5–23V (compatible with 2–5S lithium batteries or 5–15 nickel-metal hydride/cadmium batteries) Ripple: less than 50mVp-p (@ 2A/12V) Note: Allow 0–1cm variation due to manual measurement. Slight color differences may occur due to variations in monitor resolution. Package includes: 1 x 3A UBEC