Description： GSM CONTROLLER, 900/1800 MHZ
Model : GSM-889
* Control/Alarm/Monitor via GSM mobile phone, with no distance limitation.
* 8 channels RS232 input, 8 relay outputs, 8 switch inputs.
* 8 channels RS232 input can cooperate full line LUTRON instruments (build RS232 output), it will
　display the real value with the measuring unit on mobile phone.
* Analog channel Hi/Lo alarm warning setting.
* Interface cable ( meter to GM-889 ), Model : GMCB-89.
* Application : Intelligent , innovation, wide range,no limitation.
* 3 band (850/1800/1900 MHz) for American market