The T-12 fixture is on its way out. You can still buy them, but just like the 100 watt incandescent light bulb, the T-12 bulb is on it's way out. The government is not allowing manufacturers to make them after 2012.
While there are different sensor technologies (infrared, ultra sonic, and dual technology) today's post is about which applications are not suited to the PIR, or infrared sensor and how to choose an Infrared Sensor.
I have written in the past about which sensors are for various applications, however a common question I hear is "how much electricity do they save?". In this article I will run through a common scenario and show the benefits of adding them to your lighting system.