The advantage of the S3523: 1. 8 wireless Zones and 2 wired zones. 2. Support SMS function. the system will automatically send SMS to you what zone was trigged. 3. With Intercom and wiretap functions, so you can speak to the house or listen into the house. 4. With AC power status monitor function. 5. With voice instructions and voice alert functions. 6. Based on the GSM communication network, apply to wide range situations.
