The RCI 918NMO40 by RCI by dormakaba is a tamper-resistant narrow exit pushbutton designed for secure access control and exit applications. It features a 1-3/4" (44mm) diameter blue button and offers options with a handicap symbol screen printed or a blank faceplate. The device mounts quickly to single gang surface or recessed electrical boxes, enhancing installation efficiency. Its hardware kit includes stainless steel tamper-proof screws and a spanner bit, supporting durable and secure mounting. The pushbutton is available with momentary (2-SPST), maintained (2-SPST), or time-delay (DPDT) switches and comes with a brushed stainless steel (32D) faceplate for added resilience and aesthetic appeal.