Yes! There was 3 in the system but one of which was removed in early 2008, Here was the removed Sirex https://goo.gl/maps/yTSrJYyDScr , it's on the corner of the building if you can't see it, also the first Model 5 might have coding equipment.
Here are some sirens in New Jersey. Model 5 - https://goo.gl/maps/sGwKPPxxFvn (Unknown) Super Sirex - https://goo.gl/maps/XNRTwaMrcUM2 (Inactive) Super Sirex #2 - https://goo.gl/maps/GCJJeMa935v (Inactive) Sentry 3v8 - https://goo.gl/maps/3nikwYzPzmL2 (Active) Eclipse 8 - https://goo.gl/maps/USEpc7b...