Precision Frequency Reference Option for FSH Handheld Spectrum Analyzer R&S ID 1304.5935.02 Incl. R&S calibration Temperature: Operating temperature range: -10 °C to +55 °C Storage temperature range: -55 °C to +90 °C Climatic loading: Relative humidity: +25/+55 °C at 95 % relative humidity (EN 60068-2-30) IP class of protection: 51 Connector: 7-contact male (type Binder 712) Power consumption: 0.20 W Dimensions (diameter × height): 88 mm × 94 mm × 26.0 mm (3.5 in × 3.5 in × 0.8 in) Cable length: 0.25 m (0.82 ft) Weight: 250 g (0.6 lb)