RD5-12S05W is a 25.4x25.4x10.2mm power module manufactured by RuiDaKangDY. It is ROHS certified and is a wide input voltage range, DC/DC step-down power module with short circuit protection, input over-voltage protection, input under-voltage protection, and thermal shutdown. It has two switch positions, adjustable output voltage, 500kHz switch frequency, high efficiency, and low noise. It has an adjustable output current of 0.5A and wide input voltage range of 4.5V-32V making it suitable for use in a variety of applications. The module is also small in size, allowing for its easy integration into circuit design.