The WT4901 Wireless Indoor Siren is a fully supervised wireless siren designed to work with the ALEXOR Wireless Panel. With its sleek and modern design, the WT4901 will fit most internal spaces and is unobtrusive to the hom eenvironment. Since ALEXOR is mounted in a secure (but sometimes remote) location within the home, audible indications, via ALEXOR's onboard siren, regarding alarm triggers or smoke/fire detection may be quieter than what the WT4901 provides. And an indoor siren provides an alert to potential danger before a person moves too far into the home. With its powerful sounder, the WT4901 will annunciate these issues from its remote location but will not indicate the location of the control panel. The WT4901 also distinguishes between burglar and fire alarm by emitting different sounds for each and indicates entry and exit delays, trouble beeps and uses multiple door chimes.