... Remote control 3.wireless remote control 4.2 Input / 2 Output / USB GSM intelligent controller for car alarm security system( 2 Input / ... which can be used for authorized door access, controlling gates, switching of remote equipments, car parking systems. Actually the GSM ... , Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, Gas Leak Sensor, ...