Specification: - Input: 100-240V AC, 50/60Hz - Output: 13.5W Max, 9V, 1A(1000 mA) - Plug Size: ID: 2.1 mm Compatible with 2.5mm. ; OD: 5.5mm - DC Tip Polarity: Central Positive(+) - Cable Length: 0.9m/ 2.9ft Multiple Protections with smart chip of 9V 1A Power Adapter to ensure the safety and stability: automatically over temperature cut-off, short-circuit cut-off, under-voltage protection, over voltage cut-off and over-current cut-off.Sufficient 9W output power and stable 9V output voltage will protect your electronic devices from destruction. Breadboard Power Supply Module: Output two road independent control, can switch over to 0 V, 3.3 V, 5 V. Input Voltage: 6.5-9V (DC) or 9V Battery. Output Voltage: ~3.3V/~5V; Output Current: 700mA(Max). With 9V battery snap power cable T-type 5.5x2.1mm connector. Fit for: MB-102 Breadboard; Arduino Board Solderless Breadboard etc. Equipped with a battery Clip for easy battery power,There is a green LED to indicate the presence of power, and an ON / OFF latching switch to control the power to the board. This is a plug-in power supply and the headers below the board simply plug-in to the breadboard. Once plugged in, the voltage rails to both sides on the breadboard then provide power. You then use the yellow jumpers to select the voltage levels required. This is a dual output 3.3 V, 5 V regulated board and you can have either voltage on either rail on the breadboard, which is very useful. Alligator clip test leads 11.8-inch(300mm) jumper wire with an alligator clip on one end and female jumpers on the other forArduino, Raspberry Pi, Orange pi, wearable circuit projects or a breadboard experiment. Easily connect a wire to breadboard from power supplies, LED strips, multi-meters, Lilypad, etc. Combined with the complimentary male to male / male to female DuPont cable docking can be extended and male to female conversion