National Cold Vault builds a cellular temperature monitor for medical refrigerators — the private-stock vaccines, GLP-1s, insulin, allergen extracts, and biologics you paid for yourself. It runs on its own 4G LTE connection and its own battery, so it keeps working when your Wi-Fi drops, your password changes, or the power goes out.
Batch 1 ships by March 31, 2027. We’ll post the real count here as orders clear — and only the real count.
If your medication fridge fails at 2 a.m., your phone rings. See what we measured → The 2 a.m. Test →





$99 refundable deposit per node
Founding rate held 24 months. Annual increase capped at 3 percent thereafter.
Batch 1 (nodes 1–50) ships by March 31, 2027. Batch 2 (nodes 51–100) ships by May 31, 2027.
Need 3 or more nodes? Contact us for pricing
If you're a VFC provider, Ohio gives you a logger for the state-supplied vaccine. It does not cover the refrigerator holding the inventory you bought — private-stock flu and Shingrix, GLP-1s, insulin, allergen extracts, compounded preparations. That's the fridge you'd replace out of pocket.


Our hardware bypasses local Wi-Fi networks entirely. Each unit ships with a pre-configured LTE cellular modem, transmitting encrypted telemetry directly to our secure cloud infrastructure.
When a probe reads out of range — or the unit loses power — the system places a phone call. Not a push notification that sleeps with your phone. It calls, then texts.
Alert timing is being measured through September 2026.

Standard Clinical Range
Standard clinical range (-30°C to +60°C). Platinum RTD probe in a sealed glycol thermal buffer, on a wire passing through the door gasket. Radio outside the cabinet.
Industrial Lithium
Mains with battery backup. Reports on power loss.
Cellular, 5-min Interval
Quectel EG800Q-NA, LTE bands 12/13. Its own SIM. No gateway, no facility Wi-Fi.
$99 per node, refundable any time before we ship. The annual subscription isn't charged until the device is on your fridge and working.
Reserve a NodeQuestions? Contact sean@nationalcoldvault.com