The Honeywell Home Audio Verification System (AVS) Voice Modules Lot of 2 is a pre-owned surveillance monitor/display unit designed for home security systems. These wired units operate on 16.5V of power and come from the country of Mexico. The voice modules included in this lot allow for audio verification and enhance the security monitoring capabilities of the system. Perfect for those looking to expand or upgrade their existing home surveillance setup, these Honeywell modules provide reliable and efficient audio monitoring for added peace of mind.