Temperature Guard ,   Model: AR500-3 Additional Information Argo Temperature Guards are low cost, easy-to-use thermostat accessories designedfor residential use or commercial application inareas such as temperature-sensitive computerrooms or for refrigeration monitoring in the foodservice industry. If the temperature goes beyondpreprogrammed limits or if a power failureoccurs the unit will dial up to four emergencynumbers to alert the home or business owner. ·Monitors temperature and power via phone ·Programmable High/Low temperature limits ·Accepts 4 programmable emergency phone or pager numbers for call-out ·“Plug & Play”Installation ·Easy to program with recorded prompts ·Works with answering machine or fax on same phone line ·Features rechargeable 4 hour battery back-up with optional 20 or 30 hour extended battery available ·FCC approved and registered Brochure 240004974 - AR500-3 Rev. 1/10 378.7 kb Installation & Operation Manual 240004976 - AR500-3 Rev. AR5032 196.4 kb