... Technology (SMT), good heat dissipation, light & thin, endurance time is twice longer than the normal models, fit to work in 24 hours ... , ringing test, voice test. 4. Monitor at real time. 5. Can record in the setting period as you need, then it will ... channel, voice can be compressed by 5times. AST(average seek time): 39MSPower Consumption: 200W MAXTemperature: +5°C— +40°CHumidity: 5% — 85 ...