Add value to video surveillance installs with custom voice alerts. Activating custom voice messages using video-based triggers allows installers to tailor video surveillance solutions, adding value for customers and increasing revenue. Easily add custom messages with ELK’s recordable voice modules. Record messages using the built-in microphone or optional sound card interface. These units feature a 24-watt amplifier with adjustable volume for speakers. A line level output allows connection to paging systems or amplifiers. ELK offers two recordable voice modules: the ELK-120 with four channels and the ELK-124 with eight channels.