Power adapter No name YN5238 12 V 2 A DC plug 5.5 × 2.5 mm

The No name YN5238 external power adapter provides a regulated 12 V DC output with a maximum current of 2 A delivered through a 5.5 × 2.5 mm DC barrel plug. It is designed to supply steady low-voltage power to a range of consumer and security devices. The adapter features a standard mains input and integrated protection circuits to maintain stable output voltage and to reduce the risk of overcurrent, short circuit or overvoltage conditions during normal operation.

Advantages

This compact adapter offers a consistent 12 V/2 A power source with a common 5.5 × 2.5 mm connector suitable for many cameras, LED strips and networking devices. Built-in protection circuitry helps protect connected equipment from common electrical faults. The external brick design simplifies installation and replacement without modifying existing cabling or device housings.

Suitable for

• Surveillance cameras and analog/digital CCTV equipment that require 12 V DC
• LED strip lighting and small LED modules operating at 12 V
• Home networking equipment such as routers, switches and access points with 12 V input
• Portable electronics and small appliances that accept a 5.5 × 2.5 mm DC barrel plug at 12 V/2 A

Key specifications

• Output voltage: 12 V DC
• Maximum output current: 2 A
• Output connector: 5.5 × 2.5 mm DC barrel plug
• Input: standard mains AC input (region-dependent plug)
• Protection features: overcurrent, short-circuit and overvoltage protection
• Form factor: external wall-mounted/desktop adapter (brick style)

How to use

Connect the adapter to mains power using the appropriate regional plug, then insert the 5.5 × 2.5 mm DC plug into the device’s power jack rated for 12 V input. Ensure the device’s rated voltage and current requirements do not exceed 12 V and 2 A respectively. Allow a brief stabilization period after powering on to confirm the device operates normally and that there is no excessive heat or unusual noise from the adapter.

Usage recommendations

Verify polarity before connecting: the adapter is intended for devices accepting a center-positive 5.5 × 2.5 mm plug unless the device documentation states otherwise. Use in a well-ventilated environment and avoid covering the adapter during operation. If a device requires inrush current higher than 2 A at startup, consider using a supply with appropriate headroom to prevent triggering protection limits.