... DTU). (The Different from RTU5010 is the GSM Controller RTU5011with 8 Digital NC/NO inputs,8 relay drivable Outputs, 4 ... Default communication parameter 9600,n,8,0,1>>Temperature: -20-+70 °C>>Humidity : Relative humidity 95% (condensation free)>>Output drive voltage: Equal ... contact us. Skype: Samchinese New Upgrading,GSM SMS Controller,RTU5011,Temperature UP DOWN remote control,24V DC Switch,NC NO ...