Some clarification after some questions by NickLazz may help others building this sensor.
I bought a 12 volt "wall wart" transformer and the corresponding jack through Digikey.com (Part No. T963-P5P-ND @ $6.98 and CP-038A-ND @ $0.47) which work well. The transformer supplies a regulated 12 VDC at 0.5A and the center tap is +12 Volts. That lead (from the jack mounted in the side of a 6" x 6" x 4" plastic waterproof enclosure) is connected to Pin 1 of the A-B relay while the other side of the jack gets connected to the strobe. You can mount the strobe on top of the WP Enclosure and extend its red lead to Pin 3 and the black lead to the ground side of the jack. Be sure the 120V White wire from the remote connects to the H230B relay, Pin 7 on the A-B relay and continues to the Photoeye and candelabra lamp. I did a search on
www.action-electronics.com using "lamp strobe" and the
third item is exactly the same as the stobe lamp I bought on eBay -- it has a 10-12" red/black pigtail, a gasket and two integrated machine screws to bolt it in place. Any color you want! Their power supplies should work, too.
A little explanation on the
A-B relay. They come in two types with either 2 switches or 3 to fit an 8-pin or 11 pin socket, with many different coil voltage choices. They are in a compact shape, often called "ice cubes" by controls engineers. The 700-HA32A1 uses an octal socket (I used the 700-HN125 with screw terminals) and pin 2 and 7 connect 120V to the coil that activates the pair of switches. The other pins serve the switch contacts that are rated at 10 amps and are dual pole, dual throw switches with 1-3 and 6-8 in the normally open position. When the coil is activated (in our case by the light beam getting blocked and 120 VAC going down the Red lead to pin 2), the power coming to pins 1 and 8 is switched to pins 3 and 6. It you had an application needing 3 switches, the 700-HA33 series would be used with an 11-pin socket.
You can often find them on eBay or buy them at an electrical supply house.
The Summit Lighting CP688 Photoeye was purchased at Lowe's because it has no delay. Try the Orange BORG (Homely Despot) for one. If you cannot find one, you should be able to use one of the delay style found at Lowe's, like
Utilitech EZ-346 for < $7.00. It will have a delayed action (the delay is so a passing car won't turn your yard lamp to turn off). It simply take a little longer for sawdust to block the beam, but you won't have false alarms, either.