*** We no longer carry this part. *** LiftMaster 50-HERK2 Motion Detector LiftMaster® motion detector opens after sensing an object. Can be set up to detect vehicles separately from people and bring the two signals to two different outputs. Or, use the two outputs to differentiate between forward and backward movements. Detection fields are adjustable - manually or with a remote control. Can be mounted between 8.2' up to 23', with max range of 80'. Reference height of 23' and angle of 45 degrees. Detection field is 20'x16'. NOTE: Requires 24-volt power supply separate from operator. IMPORTANT: Due to supply chain shortages we currently do not offer quantity discounts, and for some of our products we are limiting the quantities that may be purchased.
Huge inventory of torsion springs for same or next day shipping! Here you will find all you need in the most common sizes of 1 3/4," 2," 2 1/4," and 2 5/8" inside diameter springs. Larger 3 3/4" and 6" inside diameter commercial and industrial springs may require a day or two to ship. You'll also find TorqueMaster Springs, Extension Springs, Self-Storage door springs, steel rolling door springs and springs for one piece single panel doors.
Shelves packed with every part you need to fix your doors.
Please note. Shipping times and costs have changed. Normal transit times are currently not guaranteed, even on next day and second day shipments. Shipping prices on items over eight feet have more than tripled.