1,The manufacturer of gsm alarm system 2.Provide OEM/OEM Service 3.CE,CCC certification 4.Dual network GSM & PSTN alarm ... , INTELLIGENT, EMERGENCY, CLOSED, HELP SENIOR, WELCOME and CHIME. 5. Four sets of scheduled arm/disarm function, each time disarmed you ... Panel integrated with either dual-band, triple-band, quad-band GSM/GPRS industrial graded module, stable and reliable. Kr-5800GMateralplastic, ...