The Honeywell Ademco 4939SN-GY is a V-Plex addressable surface mount contact in grey. Designed for Form A SPST (normally closed) wiring with a reading of 100mA at 28VDC. Multiplex polling loop-capable for use with panels that have serial number device capabilities. The 4939SN-GY comes in a durable, epoxy-sealed body for ultimate protection against weather and wear-and-tear, with a snap-on cover to conceal mounting screws. The standard gap is 1.25, " so be sure to place accordingly on door or window surface to ensure optimal performance. Also available in brown or white with jacketed 5 cable to match your aesthetic needs.
Also known as -Honeywell Sensors V-PLEX SURF MNT 1-1/ 4 LEAD BR - 4939SN-GY