Ultra-Low Temperature Monitoring with Sensaphone 1800 With Clear Door Monitor temperatures that are ultra-low with this durable remote monitoring system with alarm notification system . The durable Sensaphone 1800 with Clear Door senses and issues alarms on low temperatures, Add sensors for tank levels, pressure levels and more. The Sensaphone 1800 monitors up to eight environmental conditions, offers alarm notifications for up to eight persons, alarm history reviews, and remote control capabilities. Add Bluetooth Adapter FGD-0230 for use with cell phones. Sensaphone 1800 enhanced features include: the ability to sense and issue alarms on ultra-low temperatures down to -85 degrees Celsius a sealed enclosure for added durability a rechargeable battery backup recordable voice messaging, the capability to monitor 4-20mA The Sensaphone 1800 monitors up to eight environmental conditions and offers alarm notifications for up to eight recipients, alarm history reviews, and remote control capabilities. It is ideal monitoring solution for nearly all markets, including water and wastewater, agribusiness, farms, heating/ventilation/air conditioning/refrigeration, pharmaceutical and health labs, and industrial and chemical manufacturing. Sensaphone 1800 w/ Clear Door: Monitor up to 8 conditions, plus power failure and sound level. Notify up to 8 people with custom voice phone calls or text messages Review alarm history and who acknowledged the alarm event Control a device automatically, manually, even remotely. Sends a text message and alpha page alarms. The Sensaphone Model 1800 provides reliable, easy to use monitoring for a wide array of applications. This cost effective model includes eight universal inputs to provide the flexibility you want while monitoring the most critical of conditions. Sensors can monitor temperature problems in agricultural environments, laboratories, medical applications and ultra low temperature freezer conditions - monitoring all the way down to