Knowledge Base SEM300 SEM-Honeywell, ADEMCO Vista Dual Path Installation Guide
Enhance your Honeywell/ADEMCO Vista panels with the SEM300 Dual-Path System Enhancement Module (SEM). Compatible with VISTA-10P, VISTA-15P, and VISTA-20P dating back to 2005, this module supports 4G LTE cellular and optional Ethernet for a secure and reliable connection.