Fits the equipment you already run.
A sensor about the size of a matchbox sits inside any walk-in, reach-in or freezer. Any brand, any age. Nothing to rewire.
Wireless sensors log your walk-ins, reach-ins and freezers. When one drifts out of range, the right shift lead gets a text.
Walk-in cooler34°F to 41°F38.3°FIn range
Line reach-in34°F to 41°F37.4°FIn range
Freezer−10°F to 0°F−5.4°FIn range
One reading every 2 minutes, shown sped up. Hover, tap or use the arrow keys to read a point.
One system from the cooler wall to the inspection binder.
A reading every two minutes.
Readings travel over a cellular gateway that plugs into any outlet, so a dropped kitchen Wi-Fi never leaves a gap in the log.
Inspector-ready in one click.
Pick a site and a date range. Coldline exports every reading, alert and corrective action as one PDF.
Every site on one screen.
Ops and food safety see which locations hold their range and which keep drifting, before the district visit.
Readings in range, last 7 daysSample
| Site | In range | Open |
|---|---|---|
| Wicker Park | 99.4% | 0 |
| Logan Square | 98.7% | 1 |
| West Loop | 99.8% | 0 |
| Pilsen | 96.2% | 2 |
| Evanston | 99.1% | 0 |
From a warm walk-in to a logged fix, in one thread.
What happens when a walk-in drifts at 08:12 on a Tuesday, and what gets kept.
- 08:12
The reading leaves the band.
Walk-in 2 climbs past 41°F. Coldline waits for two readings in a row above the limit, so a door propped open for a delivery does not page anyone.
- 08:13
The shift lead on the floor gets a text.
Alerts follow your schedule, so the text reaches whoever is running that kitchen right now. No reply in 10 minutes and it goes to the general manager.
- 08:21
They acknowledge and log the fix.
Replying 1 acknowledges. The corrective action comes from your own list or is typed in, and is stamped with the time and who did it.
- 08:58
The line comes back, and the record closes.
When readings return to range the event closes itself, with the whole timeline attached. That is the page an inspector reads.
Paper logs, replaced by checks that half fill themselves.
Temperature lines come straight from the sensors. Your team ticks the rest on a phone or the kitchen tablet, and the sign-off is stamped. Try the sample.
Opening checks
Wicker Park · Tuesday AM
3 of 7 done
Installed by your own team in one afternoon.
No technician visit and no downtime. Each site gets one box with everything it needs.
- 1:00 PM
Open the box
Gateway, sensors and printed unit labels, already paired to your account.
- 1:15 PM
Plug in the gateway
Any outlet near the kitchen. It connects over cellular on its own.
- 1:30 PM
Place the sensors
One inside each unit on its adhesive pad. Scan the label to name it.
- 4:00 PM
Readings start
Set each unit's range and who gets the texts. The log runs from here.
From$39per location, per month
Sensors and the gateway are included. Billed monthly, with 30 days’ notice to cancel.
- Sensors
- Up to 8 per location included. More at $4 each per month.
- Readings
- Every 2 minutes, around the clock, with no gaps on Wi-Fi drops.
- Records kept
- 3 years for every reading, alert and fix. Export at any time.
- Alerts
- Text and email, routed by shift. Nobody installs an app.
- Equipment
- Works with the walk-ins, reach-ins and freezers you already own.
- Install
- Done by your own staff, about one afternoon per site.
See your own sites on the log.
A 30-minute call with your unit list. We map how many sensors each location needs and what it costs.