occupancy sensor

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fireryan

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I have a 60x100 morton building that is being turned into an indoor storage facility with 40 6x10 units being built inside. There is gonna be 4 doors entering the facility. The owner wants timer switches at each door to control the lights. I haven't had any luck finding 4 way timer switches. I was thinking about installing occupancy sensors in the ceiling of the building to control the lights. The ceiling is a 18ft ceiling. Was gonna install 3 sensors in each walkway, for a total of 6 sensors maybe 7 and then wire them in parallel, then have the sensors turn on a contractor to turn on the lights. There is probably 25 hi bay t8 fluorescents in the building. Anybody think of a better way to do this? don't have much experience in occupancy sensors
 
Occ. sensors are the way to go. I always use the dual technology type. I like the type with LV wiring between them fed from a powerpack. Then you can run t-stat cable and not line voltage wiring.

We've had good luck with Wattstopper and Leviton. Just be sure to look up the cutsheets for whatever you're thinking of, so you can see the coverage of the sensor as well as how many can piggyback off the powerpack.
 
Cow said:
Occ. sensors are the way to go. I always use the dual technology type. I like the type with LV wiring between them fed from a powerpack. Then you can run t-stat cable and not line voltage wiring.

We've had good luck with Wattstopper and Leviton. Just be sure to look up the cutsheets for whatever you're thinking of, so you can see the coverage of the sensor as well as how many can piggyback off the powerpack.
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That was the way I was thinking also
 
fireryan said:
That was the way I was thinking also
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A three-way/four-way wiring configuration will simply not work.
You go in one door and turn the timer, then someone else goes in a different door, turns the timer dial and the lights immediately go out. :(

The only alternative to LV control wiring or wireless would be to put all four timer switches in parallel.
 
fireryan said:
I have a 60x100 morton building that is being turned into an indoor storage facility with 40 6x10 units being built inside. There is gonna be 4 doors entering the facility. The owner wants timer switches at each door to control the lights. I haven't had any luck finding 4 way timer switches. I was thinking about installing occupancy sensors in the ceiling of the building to control the lights. The ceiling is a 18ft ceiling. Was gonna install 3 sensors in each walkway, for a total of 6 sensors maybe 7 and then wire them in parallel, then have the sensors turn on a contractor to turn on the lights. There is probably 25 hi bay t8 fluorescents in the building. Anybody think of a better way to do this? don't have much experience in occupancy sensors
Click to expand...

occ. sensors will do it the best.

you can also use wireless ones, paired to a wall switch.
lutron makes ones that work well.

make sure you get hi bay sensors, so you get decent coverage.
 
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