I also use these at DOD sites for hi and low temp alarms and intake and exhaust fan triggers in the event that
the HVAC fails (or for fresh air) and the site monitor fails it then can activate on its own. Out of all the sites we have none have failed as of today. Brent KF4TNP From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Joe Sent: Sunday, January 31, 2010 8:47 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Site Monitoring This is what we used in literally hundreds of Nextel sites for temperature alarms: http://www.grainger.com/Grainger/items/1UHH2 This provides either an open or closed contact indication. I don't remember them ever failing. 73, Joe, K1ike rahwayflynn wrote: > Any suggestions on reliable freeze warning thermostats? I have a Liebert RCM8CE Remote Alarm Monitoring system and would like to add high quality thermostats for low & high temp warning. >
