Freezer temperature monitoring for Sri Lankan shops: protect your stock from power cuts
Why freezers fail, safe temperature ranges for fish, ice cream and medicines, and how wireless sensors with WhatsApp alerts prevent stock losses.
By the LankaTrack team ·
For a fish stall, an ice cream shop or a pharmacy, a freezer that fails overnight can wipe out weeks of profit. Most failures are not sudden. The temperature creeps up for hours before anyone notices.
Why freezers fail
- Power cuts that last longer than the freezer can hold its temperature
- Doors left open or not closing properly after a busy rush
- Compressor or thermostat faults, often after years of hot, humid conditions
- Overloading with warm stock
Typical safe ranges
| What you store | Typical target |
|---|---|
| Frozen fish and meat | -18 °C or colder |
| Ice cream | -18 °C to -25 °C |
| Chilled fish, dairy, drinks | 0 °C to 5 °C |
| Vaccines and many medicines | 2 °C to 8 °C |
Always follow the storage instructions from your supplier or the product label.
How wireless temperature monitoring works
A small freezer-grade probe sensor sits inside the freezer and sends readings every few minutes. If the temperature goes outside the range you set, or the power fails, you get a WhatsApp alert wherever you are. Every reading is stored, so you can download logs for inspections.
Tip: cheap hobby sensors are not built for freezers. They often stop working below 0 °C. Make sure any sensor you choose is rated for at least -30 °C.
What to look for
- Alerts that reach you instantly, on your phone, without an app
- Power-cut detection, not just temperature
- Optional door-open sensors
- Downloadable logs for health inspectors
- Sensors in sealed, moisture-proof housings
See LankaTrack temperature monitoring for pricing and a free consultation.