NOTE: These are only the Sensors for the VA-6000S Voice Alert Alarm The VA-6000S Alarm System is not included. Each of these Extra Sensors if for use with the Voice Alert System-6, a new annunciator system featuring wireless PIR sensors transmitters and a remote receiver/speaker base unit. Users record their own alert messages and are then notified with their own voice message when activity in a monitored area is detected. Key applications include: • Wireless Driveway Alarm • Residential and Small Business Security • Child Monitoring and Pool Safety • Home Automation C7 System-6 allows a maximum of six user recorded messages. Each message is specific to one zone. For instance, zone one could be for a driveway alarm -“Car coming up the driveway” while zone two could be for a sensor monitoring the back yard- “Alert! Child by the pool!” Perhaps a third sensor guards a side entrance against intruders. However, when this PIR detects movement, the base unit plays “Intruder on patio” and triggers a floodlight using one of four relays included on the base unit. System-6 can monitor all three zones simultaneously and still have three additional zones available when needed. Users can alter their messages and place the wireless sensors wherever they wish. Voice Alert System-6 sets up in minutes and can be completely customized to fit their individual needs. The wireless PIRs feature: all weather protection, adjustable mounting and sensitivity, and can send a signal 300 feet through walls and up to 1000 feet in open space. You may add transmitters (VA-6000T) to cover as many areas as you want Free Shipping To USA !