Features: Suitable for a wide electronic devices such as routers, mobile hard disks, and CCTV cameras. Suitable for enthusiasts and professionals who need dependable power solution for their electronic gadgets and tools, this adapter is Addition to any setups. Perfect for home and office environment, this power adapter can be used with doorbells, blood pressure monitors, and other low power electronic that require stable power. With its universal input voltages ranges, this power supply adapter is essential accessory for maintaining the functionality of your essential devices without interruption. Redness line positive electrode, black line negative electrode, this power supply is not waterproof, can not be used for charging, power supply for products without batteries. Specifications: Component:ABS Size:Approx.64x37x22mm/2.52x1.46x0.86inch Package Includes: 1Pc Power Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.