Data-logging system comes with IrDA communications capability with an expanded handheld data shuttle. The expanded handheld data shuttle has been updated with IrDA capability. The infrared communications function makes it possible to download recorded data from the loggers without ever having to physically gather them. The loggers in the series are capable of measuring a wide range of temperatures from -60°c to +155°c. Additional features include waterproof units, visible alarm indicator, 1 or 2 point adjustment functions and a battery life of up to 4 years.