black box自动切换系统卡SM503-C-FM
型号：SM503-C-FM
产品描述：Automatic Switching System Cards, AB RS-232 Conductor (25 Leads), DB25 F/DB25 F/DB25 M
Product Highlights
Order AB cards with RS-232, coax, twinax, RJ-11, RJ-45, DB9, and DB15 interfaces.
SVGA interface card with HD15 interface also available.
Latching relays maintain the last switched position during power losses.