SPECIFICATIONS: Input: AC100V-240V 50/60Hz. Output: DC9V~2A (0~2000mA all compatible) DC plug: 5.5mm x 2.1mm Polarity: Tip center positive +/outer negative -(reversible with polarity reversing cable ). WIDE COMPATIBILITY: Compatible with many small DC9V AC/DC home appliances, consumer electronics such as Android Tablets, Webcam, Routers, Toys, Recorder, Bluetooth Speaker, Arduino UNO R3 Mega 2560 1280, Arduino CCTV, IEIK UNO R3, rowing machine, security cameras, CD Player, DIY projects and other devices which are powered by DC9V(2A,1.5A,1A,800mA,600mA,500mA,400mA, 300mA, 200mA,100mA) power supply. With polarity reversing cable, also compatible with Brother P touch Label Maker such as PT-D210 PT-200G PT-D210BK , Dymo Rhino, Label Manager, Letra Tag1000, 1000Plus, 100H Plus, etc. and guitar pedals, piano keyboards such as PSA-120S PSA-100 PSA-100S PSA-120 PSA-230S PSA-240 ME-80 ME-70 ME-25 ME-50B GT-100 GT-1 GT-10 AD-10 BR-80 BR-600 DB-88 DB-90 CE-2B RE-20 RC-1 RC-3 Roland PSB-1U PSB1U Effect Pedal GT-10 GT-10B BCB-60 AC-2 AC-3 AD-3 AD-8 AW-2 AW-3 etc. SAFETY INSURANCE: Over voltage/ over current/ short circuit/over loaded/surge protection system loaded, robust design with fireproof shell and superior heat dissipation board, without fan noise. Product will be tested before packing and shipment. EXTENDED CORD&MULTIPLE CURRENT OPTIONS: 1.75-meter high conductivity fine copper power supply cord allows convenient placement and efficient connection of devices without being restricted by short cable length. Supports DC in 9V with 1000mA, 500mA, 400mA, 300mA, 200mA, and 100mA output ratings, providing flexible power delivery for various electronic devices with different current requirements. This versatile 9V 2A power supply AC adapter offers exceptional flexibility with its changeable polarity feature, making it compatible with a wide range of DC9V electronic devices. The adapter supports multiple current outputs including 2A, 1.5A, 1A, 800mA, 600mA, 500mA, 400mA, 300mA, 200mA, and 100mA, ensuring it can power various equipment with different power requirements. Ideal for musicians, this DC 9 volt adapter works brilliantly with guitar pedals, keyboards, and other musical instruments. It's equally suitable for everyday electronics such as label makers, radios, and similar devices. The transformer design ensures stable and reliable power conversion from AC mains to DC output. The polarity changeable function adds valuable versatility, allowing you to switch between centre positive and centre negative configurations to match your device's specific requirements. This makes it an excellent universal solution for households and studios with multiple electronic devices. The compact design makes it easy to transport and store, whilst the robust construction ensures long-lasting performance.