Abstract: A wireless system for monitoring food safety having a monitor adapted to be disposed within a refrigerator. The monitor has a thermometer for measuring the temperature of the food within a refrigerator and a clock operatively communicating with the thermometer. The clock counts a time interval during which the thermometer detects at least a predetermined temperature communicating with the monitor. A communication signal, broadcasts an occurrence of the elapsed time exceeding a predetermined value. A receiving station within the broadcast area of the monitor, receives the broadcast elapsed time data and causes the occurrence of the elapsed time data to be transmitted across a cellular network to a remote device.

Abstract: A food refrigeration monitor includes a thermometer for measuring the temperature. A switch is operatively coupled to the thermometer and switches from a first state to at least a second state when a thermometer measures a temperature above a predetermined temperature. The switch switches from the at least second state to the first state when the temperature is below the predetermined temperature. A timer is coupled to the switch for measuring an amount of time the switch is in the second state. If the measured time is greater than a predetermined time value, an alarm is sounded.

Abstract: A food refrigeration monitor includes a thermometer for measuring the temperature. A switch is operatively coupled to the thermometer and switches from a first state to at least a second state when a thermometer measures a temperature above a predetermined temperature. The switch switches from the at least second state to the first state when the temperature is below the predetermined temperature. A timer is coupled to the switch for measuring an amount of time the switch is in the second state. If the measured time is greater than a predetermined time value, an alarm is sounded.