620/631 Series Heavy Duty PushbuttonsSchlage 620/631 Series heavy-duty pushbuttons are commonly used to control ingress and/or egress of a door. 620 and 631 Series come standard with a momentary switch but feature many factory orderable options including delayed or maintained action and narrow stile faceplates. Glow-in-the-dark and illuminated cone options on 621 and 623 models.Models621: 1-1/4" button, stainless steel faceplate, translucent cone623: 1-5/8" mushroom button, stainless steel faceplate, translucent cone625: 2-3/4" mushroom button, stainless steel faceplate, translucent cone631: 1-1/4" metal button, extreme-duty zinc faceplate, metal coneContact rating3A @ 30 VDC for momentary3A @ 30 VDC, form Z contacts for DA (delayed pneumatic action)3A @ 30 VDC for AA (alternative action/maintained)LED rating is 12-24 VDC .025A@28VDCFinish630 satin stainless steel (standard)SF-626 satin chrome on heavy-duty zincSF-613 oil rubbed bronze on heavy-duty zincSF-625 bright chrome on heavy-duty zincOptions12 color and message combinations in multiple stylesDelayed action (0-60 seconds)Alternate action - maintainedDouble pole double throw switch3 LEDs - green/yellow/redNarrow stile stainless steel plate (1-3/4 x 4-1/2)Additional informationRefer to the data sheet