GE Reason RT430 Technical Manual page 44

GPS Grandmaster Clock
TABLE 24: Environmental tests
IEC 60068-2-1
'IEC 60068-2-2
IEC 60068-2-30
IEC 60068-2-14
IEC 60255-21-1
IEC 60255-21-2
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-40°C, 16 hours (Cold)
+85°C, 16 hours (Dry heat)
95% no condensation, 55°C (Damp heat)
-40°C to 85ºC / 9 hours / 2 cycles (Change of temperature)
Class 2 (Vibration)
Class 1 (Shock)
RT430-TM-EN-5