The product shown in the image is a BMC6048 (or BSC6048) Solar Charge Controller. This device is used in solar power systems to regulate the flow of energy from solar panels to batteries, preventing overcharging and damage.
Specifications
Here is some shopping information:
It is a Pulse Width Modulation (PWM) type charge controller.
The controller can automatically recognize 12V, 24V, and 48V battery systems, with a 60A capacity.
It features dual USB ports for charging external devices.
It offers multi-stage charge management and various protection features, including overcharge, over-discharge, and short-circuit protection.