In July we reported on the launch of the Hologram developer program that offered a free SIM card and a small amount ... We’ve seen 2G and 3G modems available for some time now, but if go that ...

2 rfid cards and 1 wired siren, all come with the required batteries. 👍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 ...

2 rfid cards and 1 wired siren, all come with the required batteries. 👍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 ...

2. Lenovo is a top Chinese manufacturer of consumer electronics and entered the smartphone business in 2012. By offering power-packed devices at affordable prices it soon became a popular vendor ...