Advanced MPPT Technology: This solar charge controller automatically adjusts to 12V, 24V, 36V or 48V according to your system requirements, maximizing the efficiency of your solar panels Dual USB Ports: Conveniently charge your mobile devices directly through the controller, built-in dual USB ports are suitable for charging all types of smartphones and tablets Enhanced Display: Features a clear LCD display for easy real-time monitoring of charging status, battery information and system diagnostics Multiple operating modes, automatic disconnection when full, automatic memory data storage Wide Compatibility: Suitable for a variety of battery types, including lead-acid batteries and lithium batteries. Ensures safe and efficient charging without overcharging or damaging the battery Name:MPPT Solar Charge Controller Note: 1. This controller is suitable for lead-acid batteries (including open, sealed, colloid, etc.) and lithium batteries (lithium batteries need to manually adjust the overcharge voltage). Do not use other batteries (nickel-metal hydride batteries, etc.) 2. This controller can only use photovoltaic panels as a charging source. Do not use DC or other power sources as a charging source 3. This controller heat up when running. Please pay attention to install the controller on a flat, well-ventilated The product appearance and printed words depending on the batch, but this does not affect use Colour:B:Blue Material:Metal Package Contents: 1 x 120A MPPT Solar Charge 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.