Input: AC 100-240V, 50/60Hz.Output: DC 9V 1A 9W. Powering devices that require DC 9V and provide all amperage less than 1A, such as 1000mA 850mA 800mA 600mA 500mA 400mA 300mA 200mA 100mA. If the current drawn exceeds 1A, the power supply will be damaged soon. Never overload 9V 1A AC/DC Adapter: DC connector 5.5mmx2.5mm, compatible with 5.5mmx2.1mm. Center or Tip is positive, Sleeve is negative. 【Do not fit pedals, keyboards which requrie a power supply with center negative. If want a 9v 1a center negative power supply, we recommend: B09YRD68RK】 DC Power Supply 9W: Built-in intelligent protection system, with over-current, over-voltage, short-circuit, stability and other safety protection technologies to protect your equipment. The power supply has sufficient power and has undergone aging tests, using high-quality copper core wire, not easy to break, effectively extending the life of the power supply Widely used in UNO R3 / Nixie tube clock / Elegoo, IEIK UNO R3 / MEGA 2560 / Schwinn elliptical machine, schwinn bike, hybrid trainer, crosley cruiser portable turntable record player, bluetooth speaker, CCTV security camera system, wireless router and other devices require 9V and less than 1000mA
Parameter
Item：9V 1A Supply Power
Input: AC100V/220V 50/60Hz
Output Voltage: DC 9V
Output Current: 1A
Output Wattage: 9W
female connector size:5.5mmX2.1mm(inside"+", outside"-")
Working temperature: -10 to 50 degree Celsius
Storage temperature: -20 to 85 degree Celsius

Package included
1 x 9V1A Power Supply