Sensaphone introduces its upgraded 1800 monitoring system with a new keypad display and enhanced audio output. The system provides cost-effective, 24/7 remote monitoring of freezer and refrigerator conditions, and detects temperature changes from -109°F to 168°F, humidity fluctuations, water leaks, power failures, carbon monoxide and carbon dioxide levels, and smoke. The internal rechargeable battery backup provides 24 hours of continuous monitoring and alerts in the event of a power outage. Operators can obtain the status of each monitored condition at the installation site or remotely by phone. When the system identifies a potential issue, it immediately alerts up to eight people with custom phone calls, allowing personnel to quickly address the situation.