Features * Type:  Switching type DC-DC Step Up Boost Module;Model : XL6009 * Input voltage: 3-34 V. * Output voltage: continuous adjustable (4-35 V). * Output current: 2.5 A (MAX). * Input current: 3 A (MAX). * Input methods: IN + input is level, IN-input negative. * Output way: OUT + output is level, OUT-output negative. * Adjustment: first correct by input power supply (3-34 V, between) again using a multimeter to monitoring output voltage and the potentiometer (turn step-down, in reverse chronological turn boost). * Output voltage: 4-35 V continuous adjustable (the construction no-load commissioning) our default shipping voltage 12 V if you require other voltage can tune ourselves. * Dimentions: 45 x 20 x 14mm * Weight : 11gr Test Voltage output Samples: * Input 3V - Output 12V  0.4A  4.8W * Input 5V - Output 12V  0.8A  9.6W * Input 7.4V - Output 12V  1.5A  18W * Input 12V - Output 15V  2A  30W * Input 12V - Output 16V  2A  32W * Input 12V - Output 18V  1.6A  28.8W * Input 12V - Output 19V  1.5A  28.5W * Input 12V - Output 24V  1A  24W V-in x I-in x Efficiency = V-out x I-out