APC RJ12 serial cable pinout diagram @ pinoutguide.com
APC PS9-DTE ProtectNet RS-232 DTE Serial Port Surge Line Protector | RecycledGoods.com
Db9 Serial Rs232 To Rj11 Rj12 Adapter For Apc Rj12 Serial Cable Pinout - Buy Rs232 Db9 Serial To Rj12 Cable,Rj11 To Rs232,Rs232 Db9 Serial To Rj45 Cable Product on Alibaba.com
APC 940-0024C Smart Signaling Serial Cable - Serial