From the Facebook post made by sirens for cities:
"Sirens for Cities was recently awarded a major contract to supply Henry County, Georgia with 19 new Sentry 16V2T-B warning sirens. Henry County currently has 26 sirens around the county. The addition of the new Sentry's should provide Henry County with some of the best coverage in the state.
http://www.co.henry.ga.us "
Henry currently has 26 Loundon ES-2000s, and a Darley Champion.