This small GSM/GPRS phone features unique faceplates that can be replaced to change the look and shape of the phone. Other notable features include EMS and polyphonic ringtones.

This economy dual-band GSM phone includes several higher-end features ... Also sports EOTD position location, Ringer ID, and Wireless Internet.

While it is more expensive than the XBee wireless boards we see often, this GSM modem isn’t limited to the 300 foot range of the XBee. We’ll probably see this in a high altitude balloon ...

Short message service (SMS) is available on many digital GSM networks. Wireless application protocol (WAP), an open specification for mobile devices, allows users to communicate with satellite phones, ...

Everyone at Electromagnetic Field 2018 gets one of these GSM phone badges ... can be channeled more effectively through the on-site wireless network. Each base station only has capacity for ...

👍Support WIFI and GSM dual network(you can use GSM if there is no WIFI, The WIFI only can work with 2.4G, not work with 5G), Different alarm status: away arm, home arm, delay arm and timely arm ...