92Appendix 1 Technical ParametersAppendix 1.1 VTO2000A-CModel VTO2000A-CSystem Main Processor Embedded microcontrollerOperating System Embedded LINUX operating systemVideoVideo Compression Standard H.264Input 1 megapixel CMOS HD cameraNight Vision SupportAudioInput Omnidirectional microphoneOutput Built-in speakerTalk Support two-way audio talkOperatingModeInput One-button inputLock Status Detection Support (optional)Structure &InstallationMaterial Stainless steelMounting Mode Surface mounting and flush mountingProtectionPerformanceProtection against MechanicalImpacts IK07Protection against SolidObjects and Liquids IP54Tamperproof SupportNetwork Ethernet 10M/100Mbps self-adaptiveNetwork Protocol TCP/IPSpecificationPower Supply DC 12V–24V±10%Power Consumption Standby ≤1W; working ≤10WWorking Temperature ﹣40℃~+60℃Relative Humidity 10%~95%RHSize (Length× Width × Height) 110.7mm×118.1mm×42.3mm (including lens case)Weight 0.36kg