The new IntelliKnight ® SK-IP-2 and SK-IP-2UD are IP communicators, UL listed for monitoring of Silent Knight fire alarm panels. (See compatibility table) The SK-IP-2 has two supervised inputs, and two additional outputs.The SK-IP-2UD version 6.0 adds a modem daughter board (2UD) that supports upload/download over the Internet or a customer’s Intranet for IntelliKnight models 5820XL and 5808 FACP’s. These IP Communicators are UL 864 listed for signaling under Other Transmission Technologies and comply with NFPA 72 requirements.