How much does an indoor alarm cost?

A house of about 100 square meters costs about 800-1,000 yuan, including wifi+GSM alarm host, infrared detector, door sensor, smoke detector, gas detector, and gas solenoid valve , surveillance cameras, sound and light sirens, etc. When the wifi+GSM alarm host alarms, it can push alarm information to the user's mobile APP for free through wifi, and at the same time make calls to users, and is equipped with a built-in internal pool to ensure 24 For hours of uninterrupted work, it will be cheaper if it is a single wifi alarm host or a single GSM alarm host, but a single wifi alarm will not make calls, while a single GSM alarm will charge for sending text messages. It depends on how much you charge. What is the fee for the card you apply for? It is usually 10 cents per card