{
  "id": "heltec-v4",
  "name": "Heltec V4",
  "vendorId": "heltec",
  "kind": "dev-board",
  "lifecycle": "active",
  "familyId": "heltec-wifi-lora-32",
  "revision": "4.3",
  "aliases": [
    "Heltec WiFi LoRa 32 V4",
    "WiFi LoRa 32 V4",
    "WiFi LoRa 32 V4.3.1"
  ],
  "replaces": "heltec-v3",
  "image": "heltec_v4.svg",
  "official": true,
  "product_url": "https://heltec.org/project/wifi-lora-32-v4/",
  "datasheet": "datasheet.pdf",
  "price": {
    "amount": 18,
    "currency": "USD",
    "asOf": "2026-06"
  },
  "refs": {
    "mesh-sh-device": "heltec-wifi-lora-32-v4"
  },
  "description": "ESP32-S3R2 + SX1262 successor to Heltec V3 with 16 MB flash, 2 MB PSRAM, and up to 28 dBm LoRa TX power. Same 0.96-inch OLED and largely V3-compatible pinout, plus solar input, optional GNSS header, and built-in 2.4 GHz FPC antenna. Native USB-C (no CP2102). Widely used for Meshtastic and MeshCore.",
  "roles": [
    "companion",
    "repeater",
    "room-server",
    "standalone-ui"
  ],
  "transports": [
    "ble",
    "usb",
    "wifi"
  ],
  "variants": [
    {
      "name": "863~870MHz OLED (CN)",
      "sku": "ZC-310-1-CN",
      "bands": [
        "868"
      ]
    },
    {
      "name": "902~928MHz OLED (CN)",
      "sku": "ZC-310-1-CN2",
      "bands": [
        "915"
      ]
    }
  ],
  "hardware": {
    "mcu": {
      "model": "esp32-s3",
      "flashMb": 16,
      "psramMb": 2,
      "ramKb": 2048
    },
    "radios": [
      {
        "technology": "lora",
        "chip": "sx1262",
        "bands": [
          "433",
          "470",
          "868",
          "915"
        ],
        "txPowerDbm": 28,
        "antenna": "IPEX-1.0"
      }
    ],
    "display": {
      "status": "present",
      "technology": "oled",
      "controller": "SSD1306",
      "size": 0.96,
      "resolution": {
        "width": 128,
        "height": 64
      },
      "colors": "monochrome"
    },
    "gnss": {
      "status": "none"
    },
    "leds": {
      "status": "present",
      "description": "White user LED"
    },
    "power": {
      "batterySupported": true,
      "batteryBuiltIn": false,
      "batteryConnector": "SH1.25-2",
      "charging": true,
      "solarInput": true,
      "batteryChemistry": "li-po",
      "consumptionIdleMa": 20,
      "consumptionTxMa": 120
    },
    "expansion": [
      {
        "type": "header-2.54",
        "count": 2,
        "pins": 18
      },
      {
        "type": "header-2.54",
        "count": 2,
        "pins": 2
      },
      {
        "type": "gnss-1.25-8",
        "count": 1,
        "pins": 8
      }
    ],
    "enclosure": {
      "builtIn": false
    },
    "physical": {
      "dimensionsMm": {
        "width": 51.7,
        "height": 25.4,
        "depth": 10.7
      },
      "weightG": 35
    },
    "environmental": {
      "operatingTempC": {
        "min": -20,
        "max": 70
      }
    }
  },
  "interfaces": {
    "usb": {
      "connector": "USB-C",
      "capabilities": [
        "power",
        "serial",
        "flashing"
      ]
    },
    "bluetooth": {
      "version": "5.0",
      "ble": true
    },
    "wifi": {
      "status": "present",
      "standard": "802.11 b/g/n"
    }
  },
  "source": {
    "path": "data/devices/heltec-v4/device.yaml",
    "updatedAt": "2026-06-22T21:31:07+02:00"
  },
  "vendorName": "Heltec Automation"
}