Monnit Cold Chain IoT Monitoring (ALTA Sensors and iMonnit)

Monnit Corporation is a US maker of long-range wireless IoT sensors, whose announcements are datelined Salt Lake City and which traces its inception to 2010. It offers 80+ sensor types and reports 72B+ data points delivered in 130+ countries for 90K+ customers, addressing businesses that need continuous temperature records for vaccines, medicines and food without manual checks.

The Cold Chain IoT Asset Tracking Solution combines ALTA Wireless Low Temperature Sensors, covering -200 °C to 0 °C with ±0.5 °C calibrated accuracy, and ALTA Digital Temperature Sensors for -40 °C to 125 °C, with ALTA XL cellular or Ethernet gateways and the iMonnit cloud platform. Sensors transmit more than 2,000 feet through 18 or more walls, and the new Ethernet Gateway 4K models support up to 4,000 sensors each. iMonnit sends alerts by push, text, e-mail or voice call and keeps automated logs and reports. Users include labs, pharmacies, hospitals, commercial kitchens, warehouses and refrigerated vehicles.

• ALTA Low Temperature Sensor: monitors -200 °C to 0 °C with ±0.5 °C calibrated accuracy for freezers and cryogenic storage.
• ALTA Digital Temperature Sensor: covers -40 °C to 125 °C with on-device time-stamped records.
• ALTA XL cellular gateways: connect sensors in vehicles and remote sites to the cloud.
• Ethernet Gateway 4K: up to 4,000 sensors per gateway with a 30,000-message sensor buffer.
• iMonnit cloud: alerts, automated logging, reporting and remote management of sensors and gateways.
• Encrypt-RF security: Diffie-Hellman key exchange and AES-128 encryption with over-the-air updates.

• A vaccination center chain in Vietnam can monitor vaccine refrigerators and freezers at every site with alerts to on-call staff.
• A cold storage warehouse can cover many rooms with long-range sensors and a few 4K gateways.
• A central kitchen or food chain can keep automated temperature logs for food safety inspections.

• Immediate alerts by push, text, e-mail or voice call when temperatures leave the acceptable range help prevent losses of vaccines and food.
• Long range of 2,000+ feet through 18+ walls reduces the number of gateways needed in large warehouses.
• Ethernet Gateway 4K models support up to 4,000 sensors each, and several gateways can act as one logical network for multi-site operators.
• ISO 17025-accredited, NIST-traceable calibration certificates and FDA 21 CFR Part 11 workflows support audits.

Hospitals, pharmacies, food service and logistics operators are replacing manual temperature checks with wireless sensors and cloud alerts to meet food safety and pharmaceutical storage rules. In Vietnam, the growth of pharmacy chains, vaccination centers, central kitchens and cold storage makes affordable wireless monitoring with calibrated records increasingly relevant.

Monnit Corporation dates its inception to 2010 and issues announcements from Salt Lake City. Its cold chain solution won the IoT Evolution Asset Tracking Award for the fourth consecutive year in June 2026, and in January 2026 it launched the ALTA and ALTA XL Ethernet Gateway 4K. In Asia, Monnit Korea was established in 2018, and a January 2026 agreement lets Tokyo-based Widetec sell ALTA sensors in Japan.