... telephone alarm system, MMS alarm, microwave/pir sensor switch, camera and various accessories including: pir sensor, smoke sensor, gas ... CDMA/GPS and short distance wireless communication(2.4g, 433/315mhz)7, familiar with RS485/232,DMX512,CANBUS port and have ... android application software OEM OEM ODM service offer, touch screen system product design, with WIFI, Internet, home network product design