Product information:
-Rated Voltage: 12V 24V Auto
-Application: Solar System Controller
-Current: 20A, 30A
-Size: 150 x 78 x 35mm
-20A: 260W 12V 520W 24V
-30A: 390W 12V 780W 24V

Contents in Box:
-1 x Solar Panels Battery Charge Controller
-1 x User Manual

More information about product:
-Build-in industrial micro controller.
-One-key setting, auto memory function. digital display,
-4-stage PWM charge management.
-There are Build-in short-circuit protections, open-circuit protections, reverse protections, over-load protections. reverse current protections, low heat productions.
-With double USB ports charge.
-The Regulator is only suitable for lead acid batteries: OPEN, AGM, GEL

Safety Instructions:
-Make sure your battery has enough voltage for the controller to recognize the battery type before first installation.
-The battery cable should be as short as possible to minimize loss.
-The regulator is only suitable for lead acid batteries: OPEN, AGM, GEL
-Make Sure it is not suited for nickel metal hydride, lithium ions or other batteries.
-The charge regulator is only suitable for regulating solar modules. Never connect another charging source to the charge regulator.

System Connection:
-Connect the battery to the charge regulator plus and minus. it will show 1, if it detects 12V battery, 2 if it detects 24V battery.
-Connect the photovoltaic module to the regulator plus and minus.
-Connect the consumer to the charge regulator plus and minus.