Solid Door Sensaphone 1800 Remote Monitor by Sensaphone Choose this remote monitor and alarm if you need a durable remote monitoring system with the ability to monitor low temperatures. The Sensaphone 1800, FGD-1800-SD, monitors up to eight environmental conditions, offers alarm notifications for up to eight recipients, alarm history reviews, and remote control capabilities. The 1800s enhanced features include the ability to sense and issue alarms on ultra-low temperatures down to 85 degrees Celsius, sealed enclosure for added durability rechargeable battery backup recordable voice messaging, capability to monitor 4-20mA. Add Bluetooth Adapter FGD-0230 for use with cell phones. 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 with Solid 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 85 degreesC. The 4-20mA input choice means that the 1800 can be used with a wide variety of transducers to monitor tank levels, pressur This item ships from a separate warehouse and may require extra time for delivery.