Garmin 74C 用户手册

Temperature

Operating: 41 to 95 °F (5 to 35 °C)

Storage: 14 to 140 °F (–10 to 60 °C)

Humidity 

Operating: 20 to 80% RH, 
non-condensing 

Storage: 10 to 90% RH, 
non-condensing

United States

FCC 47CFR Part15B Class B (DoC)
UL1950 Rev. 3

Canada

ICES-003 Class B
CSA C22.2 No. 950-95 (cUL)

CE Marking

Directive 73/23/EEC, 89/336/EEC
EN 55022, EN 55024