How many hours of light does one bulb provide? How many lumens does this produce?
Expect up to 6 hours of continuous light using qialiy alkaline batteries. Please remember these are designed to be used on an intermittant or "as needed" basis.
where is the power switch located?
The black power button is located on the side of the bulb.
Do these have the A/B switch so that they can be used with your product that has the "light switch"
Our standard PortaBulb does not work with the remote controlled systems. Only the bulbs that come with the remotes are compatible.
Can this product be used outdoors? For example on the outside of a building, exposed to the elements.
This light is not designed to be directly exposed to the elements. Covered outdoors is fine. Hope this helps.