1. Can the Solar Warning Light be powered on and off manually?
The answer is Yes! Upon un-screwing the light's lens, you would observe two switches, number 1 and 2 respectively.
Number 1 is the Sun Switch. When switched on, this allows the warning light to be automatically turned on when darkness is detected. Do note that the factory default is set to OFF.
Number 2 is the Power Switch. This is the manual ON/OFF power switch which you are looking for. Likewise, the factory default is set to off :)
2. How bright is the Solar Warning Light?
That is a good question! We did a simple test ourselves to observe how the light performs in a typical environment.