Heltec Wireless Shell V3
Ultra-compact ESP32-S3 + SX1262 LoRa module with stamp-hole design for direct PCB integration, supporting WiFi, BLE 5, and LoRa at 470-928MHz with deep sleep current under 10uA.
$11.90
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Specifications
Certifications
Components
Xtensa LX7 dual-core processor at 240MHz with 512KB SRAM, 8MB integrated flash, WiFi 802.11 b/g/n and Bluetooth 5 LE. Features hardware crypto acceleration (AES/SHA/RSA), ULP co-processor, and 45 programmable GPIOs.
Semtech SX1262 long-range, low-power sub-GHz RF transceiver supporting LoRa and FSK modulation in the 150-960MHz band. Features +22dBm TX power, -139dBm RX sensitivity, and 4.2mA active receive current.
Bus Interfaces
GPIO Map
Overview
The Heltec Wireless Shell V3 (HTIT-Wsh_V3) is an ultra-compact LoRa node module measuring just 38.4 x 16.1 x 2.8mm, built around the ESP32-S3FN8 MCU and Semtech SX1262 LoRa transceiver. Its 1.27mm stamp-hole design allows it to be soldered directly onto a carrier PCB, making it ideal for custom product development and embedded IoT applications where space is at a premium.
The module integrates WiFi 802.11 b/g/n, Bluetooth 5 (LE + Mesh), and LoRa connectivity with dual IPEX 1.0 antenna connectors for independent WiFi/BLE and LoRa antennas. It achieves an impressive deep sleep current of under 10uA, a significant improvement over the V2's 30uA, making it well-suited for battery-powered deployments in remote sensing and mesh networking applications.
The Wireless Shell V3 includes RF shielding, ESD protection, and short-circuit protection out of the box. It runs the same ESP32-S3 + SX1262 core as Heltec's popular WiFi LoRa 32 V3, giving it full compatibility with the Arduino ecosystem, Heltec's ESP32 libraries, and community firmware projects like Meshtastic and MeshCore for off-grid mesh communication.
With a temperature-compensated crystal oscillator (TCXO) for improved frequency stability and support for LoRaWAN protocol, the module serves applications ranging from smart agriculture and environmental monitoring to industrial IoT sensor networks and urban mesh communication infrastructure.
Use Cases
8LoRa Mesh Networking
Building off-grid mesh communication networks using LoRa radio for text messaging, location sharing, and sensor data relay without cellular or internet infrastructure.
Off-Grid Communication
Text messaging and data exchange in areas without cellular or internet coverage.
Meshtastic Mesh
Off-grid mesh communication using Meshtastic firmware over LoRa radio.
LoRaWAN Node
A LoRaWAN end device that transmits sensor data to a LoRaWAN gateway for long-range, low-power IoT applications.
Embedded LoRa Module
Stamp-hole or castellated-pad module designed to be soldered directly onto a custom PCB, providing LoRa connectivity in an embedded form factor.
PCB Integration Module
Module with stamp-hole or castellated-edge pads designed to be soldered directly onto a carrier PCB for custom product development.
Remote Sensor Nodes
Deploy wireless sensor nodes in remote locations using LoRa, NB-IoT, or cellular connectivity.
Smart Agriculture
Enables precision farming through remote sensor monitoring of soil, weather, and crop conditions over LoRaWAN networks.
Resources
Where to Buy
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