This MURS Alert for use with a MURS base station or a handheld unit. If you previously purchased a MURS 4-Mile Range Intercom or you are buying a MURS Alert Kit and need an additional transmitter to monitor another location, then you would purchase this.
If you need a driveway alarm with long range, this one goes up to four miles!. It doesn't have an voice communications, but it can handle up to 4 zones.
A MURS Alert can detect people, vehicles, or large animals, and then send an alert message to the MURS 4 Mile Range Intercom base station or the MURS Handheld. Up to four different zones can be monitored simultaneously using four MURS Alert units.