Can ordinary phone cards be used with card-inserted intercoms?

Card-enabled intercoms use IoT cards.

The so-called plug-in intercom is a public network intercom, or a national intercom. The reason why it is plug-in is that in addition to having a terminal like a digital or analog intercom, it also needs a hardware accessory - the Internet of Things card. . The IoT card is similar to the mobile phone card we use every day. The difference is that it is only suitable for using data. Due to the characteristics of the walkie-talkie, we can use the IoT card to talk and send text messages, but it cannot check the Internet and other actions without the device. .

The advantage of the card walkie-talkie is that it has no limit on the distance of the nationwide walkie-talkie. Due to environmental restrictions, analog walkie-talkies can generally only reach a communication distance of 1-3km, and the same is true for digital walkie-talkies. The plug-in intercom breaks through the distance limitation and can communicate anywhere there is a network. Beifeng CM625s 4G full network public network intercom uses 4G mobile communication technology to achieve full network signal coverage of 5,000 kilometers across the country; no matter where you are, you can achieve easy and fast intercom. Beifeng CM625s4G fully networked public network walkie-talkie can enable 2,000 people to make real-time calls at the same time in group mode, saving users communication costs while also meeting users' needs for real-time calls across urban areas and long-distance coordination operations.