Control Products Deluxe FreezeAlarm Custom Dual Temperature Power Alarm FA-D2 with Remote Switch and Aux. Input with voice message to 3 numbers / Quick Status Check
Amazon.com: Freezing Temp Alert, Freeze Warn Light: Flashes Below 42°F Available in Red OR Blue (Red) Batteries Included : Automotive
Best Buy: Protected Home Deluxe FreezeAlarm Temperature Monitor FA-D2
Freeze Indicator monitoring transport and shipment | Freeze-Tag