The challenge
Cold assets fail quietly. A fridge whose compressor is on the way out, a freezer door left ajar, or a cold room that crept warm during a 2am load-shedding slot — none of these announce themselves until the stock is spoiled or a health inspector or pharmaceutical auditor asks for the temperature record you don't have. Manual checks (someone writing a temperature on a clipboard twice a day) miss the overnight and between-check excursions that do the damage, and they certainly don't catch a slow compressor failure before it dumps a freezer full of stock. In South Africa, load shedding turns this from an occasional risk into a routine one.
The core gap: the damage happens in the hours nobody is looking — overnight, over a weekend, during an outage. A twice-a-day clipboard reading can't see it, and can't prove the chain held when someone asks.
Our approach
- Wireless, fit-for-purpose sensing. A LoRa gateway and battery-friendly nodes on each unit — no cabling to every fridge — on the addaNet platform.
- Temperature. Continuous monitoring inside each fridge, freezer or cold room, trended and alarmed against safe limits.
- Door open/close. Flags a door left open — a common, expensive cause of temperature drift — in real time.
- Compressor / motor status. Watching the equipment that keeps it cold, so a failing compressor is caught before the contents are.
- Instant alerts & a continuous record. A drift, open door or abnormal compressor pattern alerts the right person's phone immediately; the edge buffers locally and syncs after an outage, so the log stays unbroken (see load-shedding resilience).