Parameter:
Input: AC 100V~240V 50/60Hz
Output Voltage: DC 18V ( constant voltage )
Output Current: Max 1A (1000mA)
Output Wattage:Max 18W
Output DC connector:5.5mm x 2.1mm (inside"+", outside"-")
Additional DC Plug Size: H 5.5*2.5 mm, G 4.0*1.7 mm, H 3.5*1.35 mm, H 2.5*0.7 mm, LED terminal connector.

Is this DC 18V 1A power supply compatible with your device?
1. Check Voltage:
Please check the parameter label of your device and check the working voltage. It should be 18V DC, not be AC 18V or lower/higher than 18V DC. Otherwise, your device will not work or be damaged.
2.Check Current:
Check the max current your device will draw. It should be equal to or less than 1A, such as 0.5A, 0,75A,1A. Otherwise, your device won't work well and the power supply will be damaged very soon.
3.Check power input port:
Check the power input port of your device. Its outer diameter and inner core diameter should should be the same as those listed above. Inner core polarity should be"+", exterior polarity should be" - ". Otherwise, the power supply can't be plugged into your device.
If your device's voltage is 18V DC, the current is less than 1A, the power port is 5.5mm x 2.1mm (5.5mmx2.5mm,4.0mmx1.7mm,3.5x1.35mm or 2.5mmx0.7mm), and the inside polarity is "+", outside polarity is "-", you can choose this 18V 1A power supply. Otherwise, please choose other power supply according to above instructions.