First, how to add the number: first find the equipment management and click to enter, and then set the SOS number: you can set three numbers. In an emergency, press the SOS button for 3 seconds, and the watch will give an alarm and dial the three numbers circularly. Nobody answered, and two rounds of circular dialing ended.
Second, how to set up the phone: find the phone book and click the "plus sign" in the upper right corner to add the number. The watch can be set with 10 phone book number, and can dial each other and make two-way calls with the watch.
Classification:
According to the communication mode, SOS telephone can be divided into wired and wireless. Wired phones can be divided into cables and optical fibers, and wireless phones can be divided into GSM/CDMA networks, operators, WIFI and so on. Theoretically, wired SOS telephone mainly adopts communication cable, while wireless SOS telephone mainly adopts GSM/CDMA technology.
SOS telephone can also be divided into high-protection SOS telephone and ordinary SOS telephone according to the different use environment. For example, in mines, it is necessary to be waterproof and moisture-proof, resistant to violent knocking, nuclear power plants need radiation protection, chemical plants need corrosion protection, and tourist attractions need sun protection, rain protection, cold protection and antifreeze.