{"product_id":"diy-kit-electronics-ttgo-t-call-v1-4-esp32-wifi-wireless-bluetooth-compatible-module-sim-card-sim800l-replaces-sim800h","title":"diy kit electronics TTGO T-Call V1.4 ESP32 WIFI Wireless Bluetooth-compatible Module SIM Card SIM800L Replaces SIM800H","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003en\/a\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003en\/a\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003en\/a\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eVoltage Regulator\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18pt;font-family:\"times new roman\", times, serif'\u003eProduct Introduction\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eThe main body of the module consists of ESP32-WROVER-B and SIM800L modules. The TYPE-C interface is extended from the periphery using the USB-to-serial port chip CP210X. It can be directly connected to a computer with a USB cable for debugging. The data transmission is fast and stable. The ESP32-WROVER-B is a universal WI-FI+BT+BLE MCU module, integrating the ESP32-D0WD chip, PCB on-board antenna, and combining Bluetooth and Wi-Fi. SIM800L is a 4-band GSM\/GPRS module with operating frequencies of 850\/900\/1800\/1900MHZ, capable of transmitting low-power voice, SMS and data information. The most prominent feature of this module is that it integrates the ESP32-WROVER-B and SIM800L modules, combines the functions of the two modules, and is equipped with a lithium battery charging and discharging circuit. It can supply power to the battery and charge the battery, and has overcharge and overdischarge protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style='font-size:18pt;font-family:\"times new roman\", times, serif'\u003eProduct parameters\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003ePower supply voltage: DC 3.6V to 5V (5V input via Type-C port)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eThe on-board lithium battery interface is integrated with the lithium battery charging and discharging circuit\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eThe module can work while charging the battery\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eThe charging current is 500MA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eSupports WIFI and Bluetooth transmission\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eThe flip cover SIM card slot design enables the use of 2G\/3G\/4G NANO SIM cards from China Mobile or China Unicom\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eSupport the transmission of voice, SMS and data information\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eTwo on-board audio ports: including a microphone input and an audio output port\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='font-size:14pt;font-family:\"times new roman\", times, serif'\u003eThe board is equipped with a blue LED IO13 pin indicator light\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1b776c4221494495b181df9b2e4fc993I.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S32435a39278448c3b4a21464d5bc83dfU.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sce8c913be84a4acab1c7cb7d5f4a62659.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S2b3d4ff4bf3248609165909b144e951bF.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/See07dcb0edab43aebd0d4fee064efbb8D.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S26e29eca9412485f971a4ee341517576y.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"Default Title","offer_id":55507056656683,"sku":"\u003cnone\u003e","price":155.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/Sbedad798db894936987e056299c41014z.webp?v=1788939745","url":"https:\/\/yoeruyo.com\/products\/diy-kit-electronics-ttgo-t-call-v1-4-esp32-wifi-wireless-bluetooth-compatible-module-sim-card-sim800l-replaces-sim800h","provider":"Yoeruyo","version":"1.0","type":"link"}