Can the ADC-V620PT be used outdoors?

No. The ADC-V620PT is meant for indoor use only. The operation temperature is 32° ~ 104° F (0°C ~ +40°C), and the operating humidity is 20% ~ 80% RH. 

For more information about the ADC-V620PT, see Indoor Fixed PanTilt (ADC-V620PT) - Data Sheet.