UL and NFPA 72 Fire Code-Compliant, the StarLink Series Wireless Commercial Fire Alarm Sole Path & Dual Path Communicators provide universal support for any brand 12V to 24V fire alarm control panel, reporting in Contact ID and 4/2. With broadest coverage footprint available in Verizon Network Certified™ CDMA or GSM 3/4G models on the AT&T network, as well as mercantile models, all provide the most economical solution and for easy, versatile installation.