Record your own warning message in any language and combine it with 3 different siren sounds! Two recordable channels provide up to 10 seconds of message time each or 20 seconds when combined. Three built-in siren sounds: Yelp, Industrial Buzzer and Temporal Coded Bell (which meets the ANSI and ISO standards for Audible Emergency Evacuation Signalling) are also included. Siren and message channels may be triggered individually or in combinations, creating many unique applications. Messages are stored in non-volatile memory and may be re-recorded as necessary using the on-board microphone (or optional PC interface). The module can be triggered by any security system or device with contact closure or voltage outputs. It features adjustable volume and current draw and a hefty 24 watt audio amplifier. One shot and continuous play mode settings. Use with the Stainless Steel Speaker (#7272), the Universal 30-Watt Speaker (#7494) and most other speakers. Record a Message for the Voice Module with your PC If you want to create your own personalized audio recordings use the PC Interface. This will allow you to record messages through a PC equipped with a stereo sound card. Use this method when you want to make multiple copies of the same recording or you want to use special sound effects from your PC. To learn how this works watch the video.