AutomationDirect will close at 3:00 PM ET on Wednesday, Nov 21st. We will also be closed on Thursday & Friday, Nov 22nd & 23rd, for Thanksgiving. The shipping cutoff for same-day FedEx shipments on Wednesday, Nov 21st is 3:00PM ET. Freight shipments as well as customer pickups deadline is 1:00PM ET. There will be NO UPS shipping available on Wednesday. Orders placed after the same-day shipping cutoff times will ship on Monday, November 26th.
18mm round metal photoeyes detect presence several ways: diffuse (light reflects from the target object back to the sensor), retroreflective (object interrupts light rebounding off a fixed reflector), or through-beam (object obstructs light traveling from an emitter to a receiver). Models are available with axial or right-angle optics (great for tight spaces).