## External module [EU Network SIM7100E SIM7100C SIM7100 4G Module](https://www.aliexpress.com/item/32968027536.html?spm=a2g0o.productlist.0.0.14cd24dfICaR4p&algo_pvid=bf0e88cb-390c-45f4-b3d0-7fd7fcc949d3&algo_exp_id=bf0e88cb-390c-45f4-b3d0-7fd7fcc949d3-1&pdp_ext_f=%7B%22sku_id%22%3A%2266564938883%22%7D&pdp_npi=2%40dis%21CHF%21%2140.19%21%21%21%21%21%40210318bb16546569203706457e3a73%2166564938883%21sea) ## Fully integrated device (one board) [T-SIM A7670E R2 Wireless Module ESP32](https://www.aliexpress.com/item/1005004266384341.html?spm=a2g0o.search0304.0.0.75f13849jZgE36&algo_pvid=e5a120b4-050e-43a1-b9d1-06f388819f04&algo_exp_id=e5a120b4-050e-43a1-b9d1-06f388819f04-6&pdp_ext_f=%7B%22sku_id%22%3A%2212000028570715987%22%7D&pdp_npi=2%40dis%21CHF%21%2140.65%21%21%21%21%21%400b0a556f16546568949682959ee65b%2112000028570715987%21sea)
