Heltec V4 

Lora Module without display, for 900 MHZ  Bands

The WiFi LoRa 32 V4, the next gen to the Heltec V3, is a powerful, high-efficiency IoT maker board featuring an ESP32S3 MCU and SX1262 LoRa Node chip; retaining the V3’s size and identical pinout, it integrates performance upgrades including a built-in Wi-Fi/Bluetooth antenna, up to 28±1dBm LoRa output power,  its superior RF and stable system design ensure it’s ready-to-use and highly beginner-friendly, supporting development via Arduino, PlatformIO, ESP-IDF, and MicroPython; making it ideal for long-range wireless open-source projects like Meshtastic, LoRaWAN, and Meshcore.

The V4.3 is a performance upgrade from the original release V4.2, with additional filtering in the receiver to achieve improved noise floor figures.  The ESP-32 MCU provides a low power sleep mode which is utilised in Meshcore firmware, to lower overall power consumption.

Note: The V4 module without display does not have an onboard 2.4GHz antenna (for units with a display, the 2.4GHz antenna is  mounted in the display bracket).  The IPEX connector for a 2.4GHz antenna is enabled ex-factory, on the display less module,  and a flexible printed circuit 2.4 GHz antenna with IPEX connector is provided with the V4 module.

Supply

Item	Quantity
WiFi LoRa 32 (V4)  with Display	x1
LoRa Antenna (short caterpillar type)	x1
1.25×2 Connector (for battery & solar)	x2
2.54*18 Header Pin	x2
2.54*2 Header Pin	x2

Main Features

• Based on ESP32-S3R2 & SX-1262, supports Wi-Fi b/g/n, BLE, and LoRa communication.

• 2MB PSRAM and 16MB external Flash, more suitable for UI and complex system.

• LoRa Transmit Power: High-power version 28 dBm

• PC casing protects the screen and integrates FPC 2.4G antenna.

• Form factor and pin compatibility with WiFi LoRa 32 V3.

• PC casing protects the screen and integrates FPC 2.4G antenna.

• Added 1.25-2Pin solar panel interface, and 1.25-8Pin GNSS interface.

• Optimized lithium battery management.

• Low power consumption is less than 20μA.