This is a car key fob (remote keyless entry transmitter / smart key remote).
It’s a typical wireless remote used to lock/unlock a vehicle, open the trunk/hatch, and trigger other functions without inserting a physical key.
Button layout (from top to bottom):
Top button (closed padlock): Lock the doors
Second button (open padlock): Unlock the doors
Middle row (two buttons): Usually trunk/hatch release (left) and another function such as remote start, power sliding door, or secondary unlock (right). The “HOLD” label indicates that one or both of these buttons require a long press.
Bottom-left button (car icon): Commonly remote engine start or another vehicle-specific function
Bottom-right red button (speaker/horn icon): Panic / alarm button (activates the horn and lights)