ECO-WORTHY 400 Watt 12 Volt Premium Solar Panel Kit :4pcs 100W Solar Panel+ 40A MPPT Charge Controller+ Bluetooth Module+ Mounting Z Brackets, 400W 12V Solar Power Off Grid System for Home, RV, Boat. 400W KIT

[Stay Connected] Monitor your system with ease using the BT-02 Bluetooth module, which pairs with the controller and transmits real-time data on solar panel, battery, load, and more directly to your mobile phone. With Bluetooth 5.0 technology, the signal can reach up to 82 feet. [Easy Installation]Each solar panel rear shelf has pre drilled and 16 foot cables with Y branches.Cable plug and play designed connectors allow for quick installation and detailed instructions for each attachment, making your installation easier and safer. [Maximum Efficiency]Maximum power point tracking technology, the tracking efficiency is as high as 99%, and the peak conversion efficiency is 98%, which is 40% higher than the traditional PWM charge controller. And protects your system from overcharge and overdischarge. [Premium Quality]100W Monocrystalline Cell Solar Panel, 21% High efficiency of charge the Energy storage equipment. Withstand high wind (2400Pa) and snow loads (5400Pa), the surface is made up of 3.2mm low Iron glass, the monocrystalline modules are framed by 35mm width aluminum alloy, which is 2~5mm wider than the others'. [Powerful Energy Generation]The Premium 400W Kit can produce an average of 1.6KWH of electricity per day (depending on sunlight availability). Each solar panel comes with a pair of 35 inches cables. By-pass diodes are pre-installed in waterproof IP-65 rated junction box to minimize power drop caused by shade and ensure excellent performance in low-light environments.