D-Link 24-Port 10/100Mbps PoE Web Smart Switch with 4-Port 10/100/1000Base-T and 2-Port Combo SFP DES-1228P - Page 14

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Humidity
Operation: 10%~90% RH
Storage: 5%~90% RH
Power consumption 222 watts
Heat Dissipation 750.2 btu/hr
MTBF 149,676 (hours)
Emission (EMI) and Safety Certifications
EMI-EMC Compliance: FCC class A, CE Class A, VCCI Class A
Safety Compliance: cUL, UL