Or a Genave RXC-2000 for only $1,292..cwsplinter wrote:You can get a Sentry G3 siren controller for $1900. Then all you need is a radio with DTMF or Two Tone Sequential capabilities.
http://www.genave.com/rxc-2000_prod.htm
They can even act as a siren controller, to use steady, wail, and fast wail. Not a bad price for all of what it does.