auto brightness rv battery management system

{"cid":"91223529","title":"300A Heavy Duty Nylon Bus Bar Power Distribution Block For Marine \/ RV \/ Auto","imgUrl":"https:\/\/img.chinax.com\/nimg\/71\/e2\/03594b1f65d0c192a29a96aaef2c-200x200-1.jpg","attrs":{"Price":"$18.23-$18.57 per item","Brand Name":"WLETO","Model Number":"WLT","Minimum Order Quantity":"20 sets","Delivery Time":"Within 15 days","Place of Origin":"Zhejiang, China","Payment Terms":"T\/T, Western Union","Supply Ability":"50000 pcs per day","Packaging Details":"18X10X7 cm","Type":"Screw","Voltage":"DC 12V - 48V","Material":"Nylon","Mounting Type":"surface","Fuse Type":"ATC or ATO","Product Dimensions":"138 x 69 x 44.5mm"}}

{"cid":"91219935","title":"MPPT Solar Charge Regulator 50A 12V 24V Battery Auto For Resident","imgUrl":"https:\/\/img.chinax.com\/nimg\/e4\/9a\/a14cb3b4fcb7957fec60e6ef8bc5-200x200-1.jpg","attrs":{"Price":"USD 85.72$~79.81$\/pieces","Brand Name":"Memorit","Model Number":"MLT-50124(ZM)","Minimum Order Quantity":"Sample \u227d 1pcs Mass product \u227d 200pcs","Delivery Time":"5-30 work day","Certification":"EMC,LVD,ROHS","Place of Origin":"Guangdong,China","Payment Terms":"L\/C, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"2000pcs per30","Packaging Details":"Carton Outside Packing With Giftbox Inside Packing","Product name":"MPPT Solar Charge Controller","Model":"MLT-50124(ZM)","Rated current":"50A","Rated system voltage":"12V \/ 24V","VOC":"120V","MPPT Tracking Voltage Range":"12 system:15V-80V; 24V system:30V-80V","Display":"LCD","Product size":"238*180*82mm","Package size":"267*209*126mm","Net weight":"2.4Kg","Gross weight":"2.7Kg","Manufacturing mode":"OEM \/ ODM \/ Support Customization","Communication":"RS485\/APP(WIFI monitoring or GPRS monitoring)","Warranty":"1 Year"}}