Support USB/Bluetooth communication: yes Ripple measurement : noise and ripple are measured at X1 range, AC coupling, 20MHz of bandwidth on your oscilloscope, with a 0.1uF parallel capacitor at the output terminals Model: RK6006-C Input voltage range: 100-120V/200-240V AC Output voltage range: 0-60.00V Output current range: 0-6.000A Output power range: 0-360W Output voltage setting/reading resolution: 0.01V Output current setting/reading resolution: 0.001A Output voltage setting/reading accuracy: (0.3%+3 digits) Output current setting/reading accuracy: (0.5%+5 digits) Output ripple typical: 100mV VPP Working temperature range: -10~40 Constant voltage moderesponse time: 2ms(0.1A-5A Load) Constant voltage mode loadregulation: (0.1%+2 digits) Constant current mode loadregulation: (0.1%+3 digits) Capacity measurement range: 0-9999.99Ah Energy measurement range: 0-9999.99Wh Capacity and energy statistical error: 2% Over temperature protection: System temperature Greater than90 Screen brightness setting: 0-5(6 level in total) Screen: 1.54 inch 240x240 color LED display Material: plastic colour: As Shown Package Contents: 1 Supply Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.