MarCELL NIST monitors and reports ambient temperature and power and is NIST certified / ISO 9000 compliant. If temperature exceeds or falls below programmable safe ranges, alerts will be sent through Text, Phone and Email based on your preferences. Unike Wifi Devices, when power is lost you will receive an immediate alert and be able to continue monitoring for up to 48hrs. Our online controls make it easy to set up your MarCELL with custom temperature and humidity ranges, alert messages, notification schedules and more. No complicated keypads or confusing displays. Just point, click and then relax! MarCELL NIST is extremely versatile and can be used to monitor many different environments, including - HVAC - Greenhouses - Grow Ops - Agriculture - Data Center / Server Rooms - Cold Storage - Warehouses - Facilities - and More. * As MarCELL is Cellular based, an affordable monthly subscription is required.