{"product_id":"heltec-vision-master-t190-esp32-s3-sx1262-902-928-mhz-meshtastic-firmware","title":"Heltec Vision Master T190 (ESP32-S3 + SX1262), 902-928 MHz — Meshtastic Firmware","description":"\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This is the Heltec \u003cstrong\u003eVision Master T190\u003c\/strong\u003e (HT-VMT190) with \u003cstrong\u003eLoRa\u003c\/strong\u003e enabled, \u003cstrong\u003e902–928 MHz\u003c\/strong\u003e band, and \u003cstrong\u003eMeshtastic\u003c\/strong\u003e firmware preloaded. ESP32-S3 development board with onboard 1.9″ TFT display and SX1262 LoRa.\u003c\/p\u003e\n\u003cp\u003eA compact ESP32-S3 + LoRa node with a bright 1.9-inch color TFT (170×320, up to 262K colors). Use it as a Meshtastic display node, or develop with Heltec’s ESP32 tools over Wi-Fi, Bluetooth, and LoRa. This listing is specifically the \u003cstrong\u003ewith-LoRa \/ 902–928 MHz \/ Meshtastic\u003c\/strong\u003e configuration.\u003c\/p\u003e\n\u003ch3 style=\"margin-top: 1.25em;\"\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP32-S3R8\u003c\/strong\u003e MCU with Wi-Fi (802.11 b\/g\/n) and Bluetooth LE 5 \/ mesh.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSX1262\u003c\/strong\u003e LoRa node chip — this variant: \u003cstrong\u003e902–928 MHz\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eShips with \u003cstrong\u003eMeshtastic\u003c\/strong\u003e firmware preloaded.\u003c\/li\u003e\n\u003cli\u003eOnboard \u003cstrong\u003e1.9″ TFT-LCD\u003c\/strong\u003e display (170×320 RGB, up to 262K colors) with protective transparent support between PCB and panel.\u003c\/li\u003e\n\u003cli\u003eType-C USB; SH1.25-2P lithium battery interface with charge\/discharge management, overcharge protection, battery sensing, and USB\/battery auto-switch.\u003c\/li\u003e\n\u003cli\u003eLoRa and Wi-Fi antenna connectors (IPEX 1.0); SH1.0-4P sensor interface; dual 2.54 mm header footprints.\u003c\/li\u003e\n\u003cli\u003eMax TX power \u003cstrong\u003e21±1 dBm\u003c\/strong\u003e; max receive sensitivity \u003cstrong\u003e−136 dBm\u003c\/strong\u003e @ SF12, BW 125 kHz.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin-top: 1.25em;\"\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 28%; padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72%; padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eProduct Name\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eVision Master T190 (HT-VMT190) — LoRa 902–928 MHz, Meshtastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMaster Chip\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eESP32-S3R8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eLoRa Chip\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eSX1262\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eFrequency (this listing)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e902–928 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eFirmware (this listing)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMeshtastic (preloaded)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMax. TX Power\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e21±1 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMax. Receiving Sensitivity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e−136 dBm @ SF12, BW = 125 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eWi-Fi\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e802.11 b\/g\/n, up to 150 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBluetooth\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBluetooth LE: Bluetooth 5, Bluetooth mesh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMemory\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e384 KB ROM; 512 KB SRAM; 16 KB RTC SRAM; 8 MB PSRAM; 16 MB SiP Flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e1.9″ TFT-LCD, 170×320 RGB, up to 262K colors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eInterfaces\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eType-C USB; 2× SH1.25 lithium battery interface; LoRa ANT (IPEX 1.0); Wi-Fi ANT (IPEX 1.0); 2× 2.54 mm header rows; SH1.0-4P sensor interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eHardware Resources\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e7× ADC1, 6× ADC2, 11× Touch, 3× UART, 2× I2C, 2× SPI, etc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBattery\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e3.3–4.2 V lithium battery supply and charge (battery not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e−20 ~ 70 ℃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e60 × 25.4 × 10.19 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eProduct Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e35 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin-top: 1.25em;\"\u003eWHAT'S INCLUDED\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × HT-VMT190 (Vision Master T190 board with LoRa, 902–928 MHz, Meshtastic firmware)\u003c\/li\u003e\n\u003cli\u003e1 × LoRa antenna\u003c\/li\u003e\n\u003cli\u003e1 × SH1.25-2P battery connector\u003c\/li\u003e\n\u003cli\u003e1 × Sensor connection wire\u003c\/li\u003e\n\u003cli\u003e2 × 2.54 × 13 header pin strips\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e lithium battery.\u003c\/p\u003e\n\u003ch3 style=\"margin-top: 1.25em;\"\u003eNOTES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis listing is the \u003cstrong\u003ewith LoRa \/ 902–928 MHz \/ Meshtastic\u003c\/strong\u003e variant only. Other bands or firmware options are separate listings.\u003c\/li\u003e\n\u003cli\u003eFor best results, keep Meshtastic firmware updated after first boot.\u003c\/li\u003e\n\u003cli\u003eOnboard 2.4 GHz uses the PCB\/spring antenna by default; an IPEX footprint is available if you fit an external antenna per Heltec’s guidance.\u003c\/li\u003e\n\u003cli\u003eDocs: \u003ca href=\"https:\/\/heltec.org\/project\/vision-master-t190\/\" target=\"_blank\" rel=\"noopener\"\u003eproduct page\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Heltec","offers":[{"title":"Default Title","offer_id":68130111553815,"sku":"U0833","price":28.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1884\/2123\/files\/1901.png?v=1793199080","url":"https:\/\/ameridroid.com\/products\/heltec-vision-master-t190-esp32-s3-sx1262-902-928-mhz-meshtastic-firmware","provider":"ameriDroid","version":"1.0","type":"link"}