The 2SC4835, 2SC-4835, 4835 is a 10V 80mA 150mW Silicon NPN Epitaxial Planer Type For UHF Band Low-Noise Amplification Transistor. Manufactured By NEC Semiconductor.
The YX850 Power Failure Automatic Switching Standby Battery Lithium Battery Module DC5V-48V Emergency Converter. It is an automatic switching module. When the battery is dead or there is a problem with the battery, it is powered by the power supply.