| Overview: This one machine three (doorbell + telephone + burglar alarm) intelligent perfect. 2.4 inch TFT full color LCD screen display, ultra-thin, ultra-small and delicate touching design, beautiful. One-button SOS secret call for help; support duress code, can secretly call the phone in case of emergency; care for life security. Features: 2.4 inch TFT full color LCD screen display, ultra-thin, ultra-small and delicate touching design, beautiful. Full-range voice color display operation, wireless transmission, easy installation. One machine three networks (WIFI + GSM + GPRS), always Net, safer, more assured. One machine three functions(doorbell + telephone + burglar alarm), | |