Seeed Studio Wio-S3 Combines ESP32-S3 and SX1262 for Long-Range IoT

This compact $7.99 wireless unit integrates a dual-core Xtensa LX7 MCU and Semtech SX1262 transceiver, delivering global LoRaWAN support alongside 2.4GHz Wi-Fi and Bluetooth 5.0.

IoT September 4, 2026 by Debashis Das

Seeed Studio’s Wio-S3 is a compact wireless module that combines an ESP32-S3R8 dual-core MCU with a Semtech SX1262 LoRa transceiver for long-range IoT connectivity. It supports LoRaWAN on the EU868 and US915 frequency bands, along with 2.4 GHz Wi-Fi and Bluetooth 5.0, making it suitable for smart agriculture, industrial automation, remote monitoring, and other connected applications.

The module features a dual-core ESP32-S3 processor with 16MB Flash and 8MB PSRAM for data processing and edge AI. It supports LoRa transmission up to 20.9 dBm at 868 MHz and 20.74 dBm at 915 MHz, with sensitivity down to -137 dBm. A built-in TCXO helps keep the wireless signal stable.

SeeedStudio Wio-S3 WirelessLoRaModule

Seeed Studio Wio-S3 Specifications:

MCU: Espressif ESP32-S3R8
- Dual-core Xtensa 32-bit LX7
- Up to 240 MHz
- 512KB SRAM, 8MB PSRAM
- External 16MB Flash
LoRa: Semtech SX1262
- LoRaWAN
- EU868 and US915
- Up to 20.9 dBm output at 868 MHz
- Up to 20.74 dBm output at 915 MHz
- Up to -137 dBm sensitivity at SF12, 125 kHz bandwidth
- Integrated 32 MHz TCXO
Wi-Fi: 2.4 GHz 802.11b/g/n
Bluetooth: Bluetooth 5.0 LE
Other I/O:
- 3x UART
- 2x I2C
- 1x SPI
- 2x 12-bit ADC groups
- USB
Misc:
- Reset and Boot inputs
- Separate Wi-Fi/Bluetooth and LoRa RF ports
Power:
- Supply Voltage: 3.0–3.6V, 3.3V typical
- Consumption
  - Sleep: 9.3 µA minimum
  - Standby: 1.43 mA minimum
  - Receiver: 5.5–5.7 mA
  - Transmitter: 113–127 mA depending on frequency and output power
Operating Temperature: -40°C to 85°C
Dimensions: 21.6 × 16.5 × 3.3 mm
Certifications: FCC, CE, and TELEC

Wio-S3 Wireless LoRa Module Reference Design

The device comes in two variants with or without an onboard IPEX connector, giving developers different antenna options. The module is designed to be built into custom IoT devices. With LoRaWAN, Wi-Fi, Bluetooth, large memory, and low power consumption, it can be used for sensor nodes, data logging, remote monitoring, smart agriculture, and industrial automation.

On the software side, Wio-S3 can be programmed with ESP-IDF and Arduino, but the module also supports command firmware for initial testing and configuration. Seeed Studio provides documentation, KiCad design files, a STEP 3D model, and SDK resources for developers working on custom hardware. The module can also connect to LoRaWAN network platforms such as The Things Network and ChirpStack. More information is available on the wiki.