American LED-gible LD-5213-101 LED Tower Light, LED andon light, LED stacklight, 120V, R/Y/G with Flashing Capabilities 52mm Indoor Red, Yellow and Green Andon Light. 120VAC with dry contact closure logic. Light comes with internal buzzer for optional termination. Light supplies power pair, steady common, flashing common, and color wire corresponding to it's light for simple contact closure activation. Buzzer uses gray internal wire for optional use. Great tool for any warehouse, factory floor, lab or facility needing visual notification or status at a glance. Our LED andon lights are one of the only products to offer easy BA15S LED replaceable bulbs for long term, inexpensive maintenance. No need to replace the entire fixture when you can replace a simple bulb. Great for operator stations, material request, call lights, machine monitoring and more. Warehouse use for workstations, inventory replenishment systems. Great for any machines needing simple operator attention. Can be used for cycle timing alerts, changeover timing, downtime status, maintenance acknowledge and more. All LD-52xx andon lights come with a 3.5 inch aluminum pole with 90 degree angle bracket mount and mounting nuts and washers. Pole is M16x2.0. Lights are prestrung with minimum of 38 inch wire lead for ease in install and termination.