Usage Tips:Product name: PWM solar panel controller Model: PWM System voltage: 12V/24V automatic identification Rated charging current: 50A Rated discharge current Maximum photovoltaic voltage 12V system Less than 23V/24V system Less than 46V Boost charging voltage: 14.6V Float charging voltage: b1/14.4V, b2/14.2V, b3/14.6V (adjustable range: 13V-15V) 13.7, (default value, adjustable range: 12.7V-15V) Discharge cut-off voltage: 10.7V, (default value, adjustable range: 9V-11.3V) Discharge recovery voltage: 10.7V, (default value, adjustable range: 9V-11.3V) Solar panel input: 12~36V Battery input: 10·12V Controller output: USB2.0: 5V/2.5A USB3.0: 5V/2.5A 9V/2A 12V/1.5A (QC4+/QC4/QC3.0/QC2.0) TYPE-C:5V/3A DC output of bulb: 12V DC output of bulb: 12V Standby current Less than 10mA Operating temperature -35°C~+60°C Dimensions: 130x72x25mm Weight: 0.075kg The floating charge voltage, discharge cut-off voltage, and discharge recovery voltage are only for 12V system. If you use 24V system, please multiply by 2. Colour:Blue Material:ABS Package Contents: 1 x PWM solar panel controller 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.