And with multiple electrical protections, including short circuit, open circuit, reverse, and overload protection, you can rest assured that this controller is safe to use. The backlit display provides a clear and convenient way to check status and data, switch modes, and configure parameters. The controller has multiple electrical protections, including short circuit protection, open circuit protection, reverse protection, and overload protection, which make it safer to use.The charge controller should connect the battery first, then the solar panel, and finally the load! With a rated charge and discharge current of 30A, this controller offers efficient charging and discharging capabilities. With a rated charge and discharge current of 30A, this controller is capable of handling a variety of loads, and can even be set to different working modes., Manufacturer: ZXZZAS