SecurityMan AirAlarmII Wireless Smart Home Alarm System Kit with Doorbell (White) Easy-to-use and cost-effective D.I.Y. (Do-It-Yourself) wireless intruder alarm system kit. Supports up to 60 wireless sensors (15 wireless defense zones and 4 wireless sensors per zone). Supports up to 5 phone numbers for auto alarm call and 1 management center protocol(CID). Armed/disarmed by remote controller, phone call, or hosts keypad. Programmable password.