Here is all of the county's sirens that I know of.
COLE CAMP - Sterling M5 (or M10 not sure) - LOCATION - Behind the Cole Camp Firehouse - SOUNDS FOR - Noon blasts every single day, Fire calls (I don't know if it sounds for test or not)
RSH 10 - LOCATION - Water Tower Park across the street from St Pual's Lutheran Church - SOUNDS FOR - Tornados only
IONIA - UNKNOWN. From a 2016 Hazard Mitigation Plan PDF, it says that Ionia bought a siren. I haven't looked there yet
Link to the PDF - http://kaysinger.com/wp-content/uploads ... 6-NHMP.pdf
LINCOLN - 2001 DC - LOCATION - 407 Morgan St - SOUNDS FOR - Tornados, (possibly noon blasts Aswell)
ECLIPSE 8 - LOCATION - Intersection of Hickory and Main - SOUNDS FOR - Tornados - Looks like it replaced a Model 2 on street view
WARSAW - 2 STH-10s - LOCATION - Behind Boonslick Library - Behind Newmans Country Mart - 2 ECLIPSE 8s - Location - Warsaw Pool and behind Taco Villa - 2001 130 - On the hill next to Walmart - ALL SOUND FOR - Tornados
RACKET - Thunderbolt 1000T - LOCATION - West Park Drive - Possibly sounds for tornados or maybe is inactive.
From what I can figure out is that the county kinda test whenever they want. I believe that it may be 1st Wednesday at 11:00 but I'm still not sure.
If anyone has any questions I'll try my best to answer them