I have a Leviton PR150-1LI occupancy sensor in my garage. I have two 4 foot T8 fluorescent fixtures (each has 2 bulbs). Neither fixture originally had rapid magnetic start ballasts.
At this time, the motion sensor would cause the lights to attempt to turn on, they would flicker for a second or two, and then shut off for 2-3 seconds. This cycle would repeat endlessly.
The switch requires rapid magnetic start ballasts to properly function. I purchased 2 of these rapid magnetic start ballasts. I installed one of them on the light furthest from the switch.
At this time, the motion sensor would cause the lights to turn on and stay on, but they flicker/buzz.
While testing the circuit I found that if I splice an incandescent test bulb between the switch and the first fixture causes both fixtures work well with the motion sensor: full, constant brightness with zero buzzing.
I came across this thread that describes what I experience. The only solutions suggested there are to get a different switch or to add an incandescent fixture into the mix permanently.
I know I could install the second rapid start ballast. I know I could purchase different occupancy sensor that doesn't rely on a specific load coming from the circuit to function.
I'm wondering if there is a cheaper solution someone might suggest.