GSM CONTROL SYSTEM
Model : GSM-840
* Control/Alarm via GSM mobile phone, with no distance limitation.
* 8 switch inputs, 4 relay outputs.
* GSM mobile phone can control the relay output and sensing the input switch's status with alarm.
* It can default two telephone no to send warning SMS.
* Features : Intelligent , innovation, wide range, control with no distance limitation.
Singapore
