What we measured
Verified Aug – Sep 2026, for 5 Prototype Units.
The 2 a.m. Test
Founder
Sean Lin
Associate Member, Ohio Pharmacists Association.
Supplements, does not replace, your manual temperature log.
We hold no patient information.
| We did | Result | We say |
|---|---|---|
| Pulled power on a cold fridge | 120 h to empty; ≥ 96 h under weak signal | Over 72 hours of battery. Measured, not estimated. |
| Blocked the signal for 48 h | 576 of 576 readings kept; delivered with original timestamps; buffer ≈ 69 days | An outage delays your record. It never puts a hole in it. |
| Tried to edit/delete alert records with our own admin key | Refused | Your alert record can't be edited or deleted — not by anyone, including us. |
| Phone on Do Not Disturb / Sleep | Rang through 5 of 5 | The 2 a.m. call gets through — after you save us as an emergency-bypass contact (30 seconds, done at setup). |
| Probe crossed 8 °C | Call on the first out-of-range reading | Your phone rings within 11 seconds to 6 minutes of going out of range, depending on where in the 5-minute cycle it happens. |
| Cut power to the device | Confirmed twice, then called | Power failure: within 10 minutes. |
| Unplugged the probe | 15 min without a valid reading → call (observed: 13 min) | Cable fault: confirmed twice before we wake you — 10 to 15 minutes. |
| Silenced the device | Independent watchdog reported it | Dead device: within 20 minutes. If our own monitoring stops, a watchdog tells us within 15. |
| Sixteen days trying to break it | Every failure found was fixed; none found by customers | — |
| Every reading | Carries its own signal strength | — |
We did
Pulled power on a cold fridge
Result
120 h to empty; ≥ 96 h under weak signal
We say
Over 72 hours of battery. Measured, not estimated.
We did
Blocked the signal for 48 h
Result
576 of 576 readings kept; delivered with original timestamps; buffer ≈ 69 days
We say
An outage delays your record. It never puts a hole in it.
We did
Tried to edit/delete alert records with our own admin key
Result
Refused
We say
Your alert record can't be edited or deleted — not by anyone, including us.
We did
Phone on Do Not Disturb / Sleep
Result
Rang through 5 of 5
We say
The 2 a.m. call gets through — after you save us as an emergency-bypass contact (30 seconds, done at setup).
We did
Probe crossed 8 °C
Result
Call on the first out-of-range reading
We say
Your phone rings within 11 seconds to 6 minutes of going out of range, depending on where in the 5-minute cycle it happens.
We did
Cut power to the device
Result
Confirmed twice, then called
We say
Power failure: within 10 minutes.
We did
Unplugged the probe
Result
15 min without a valid reading → call (observed: 13 min)
We say
Cable fault: confirmed twice before we wake you — 10 to 15 minutes.
We did
Silenced the device
Result
Independent watchdog reported it
We say
Dead device: within 20 minutes. If our own monitoring stops, a watchdog tells us within 15.
We did
Sixteen days trying to break it
Result
Every failure found was fixed; none found by customers
We say
—
We did
Every reading
Result
Carries its own signal strength
We say
—
Each unit ships with a calibration certificate for its own serial number from CTI Measurement & Testing — ISO/IEC 17025-accredited (CNAS L5102, ILAC-MRA), traceable to national standards.
Not yet proved
- No customer installations yet; pilots fall 2026.
- Cellular upgrade in progress — the current SIM passed every stress test: stable, secure, efficient. The upgrade extends coverage to more extreme locations.
The problem — Ohio Department of Health records, obtained under the Public Records Act
- 334 incidents, Jan 2024 – Jul 2026 · ≈ $9.6 M destroyed · ≈ 74,700 doses
- ≈ $30,000 average per incident · ≈ $15,000 median (always give both)
- Power outages: 19% of 2026 incidents (13% → 11% → 19%)
- ≥ 15 incidents at sites that already had WiFi loggers
- Longest undetected failures: 1,626 h and 1,253 h
- Most losses found by a person noticing, not by an alert
- ≈ 85% of 2026 causes: equipment, power, or monitoring gaps — not human error
- Private stock has no program behind it — coverage depends on your policy, and every claim depends on a temperature record.
How it works
- Three parts: a sensor probe in a sealed glycol vial (in the fridge), a small cellular unit (outside), a power adapter. No WiFi, no hub, no IT setup.
- Reads every 5 minutes. Sends over nationwide 4G LTE.
- Its own display shows the current temperature.
- Battery-backed; behaves the same on battery.
- Out of range → voice call. Back in range → text.
- One account, all your fridges, one dashboard.
- One-click audit PDF for inspections.
- Holds no patient information.
Different
- we call, through Do Not Disturb
- cellular + battery — a WiFi logger stops when the WiFi or the outlet does
- we publish what we measured and what we haven't
- a certificate for each serial plus our own ice-point check
- public price
- one account, all fridges, one-click audit PDF
- a real founder in Carrollton you can reach directly
Not this
- a substitute for your manual log and SOPs
- the state's VFC logger — Ohio supplies one for public vaccine; we're built for the private stock beside it
- an in-person installation service