The MT300 EX module monitors two individual temperature sensors and also records the minimum and maximum temperatures of each sensor. You can use the MT300 EX on-board when used with a Duplex receiver, Duplex Expander or hand-held when connected directly to a JetiBox Profi. The MT300 EX allows you to set alarms to let you know if the temperature is either too high or too low than the user-defined settings for each sensor.

Through the Duplex 2.4GHz system and either a JetiBox Profi or Jeti Transmitter you can monitor both of the temperature sensors data and alarm conditions in real time.

Dimensions: 19mm x 14mm x 4mm
Weight: 3g (without wires)
Number of Temp Sensors: 2
Temperature Sensor Range: -40C to +300C
Measuring Accuracy: 5C
Operation Temp: -10C to +85C
Supply Voltage: 3.5V to 8.4V
Current Draw (w/Sensors): 7mA

More information (links):
* Instruction Manual (pdf.)