Heltec Capsule Sensor V3 (ESP32-S3 + SX1262), 902-928 MHz
Heltec Capsule Sensor V3 (ESP32-S3 + SX1262), 902-928 MHz
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Description ▼
Note: This is the Heltec Capsule Sensor V3 for the US band (902–928 MHz). Choose a Sensor Type below — GNSS, Temperature-humidity, 3-Axis, or Barometric pressure. Compatible with Meshtastic and LoRaWAN.
Capsule Sensor V3 is a tiny, portable LoRa / LoRaWAN device based on ESP32-S3 and SX1262. A modular BTB interface at the bottom lets you swap sensor modules for different applications — positioning, climate, motion, or pressure — without being an IoT expert. WirelessBoot, a built-in rechargeable battery, magnetic charging, and an IP65 enclosure make it a compact choice for environmental monitoring, asset/pet tracking, Meshtastic, and custom Arduino / PlatformIO projects.
KEY FEATURES
- MCU ESP32-S3FN8 + LoRa chipset SX1262 — Wi-Fi, Bluetooth LE / Bluetooth 5 / mesh, and LoRa in one capsule.
- Band: 902–928 MHz (US915 / commonly called 915 MHz).
- Max TX power 21±1 dBm; receiving sensitivity down to −135 dBm (SF12 / 125 kHz).
- Modular BTB sensor interface — pick GNSS, Temperature-humidity, 3-Axis, or Barometric pressure (see Sensor Types below).
- Built-in 250 mAh rechargeable Li-ion battery; 5 V magnetic 2P-2.54 mm charging (cable included).
- Built-in LoRa and Wi-Fi/BLE antennas; stylish, compact housing (~23 g).
- IP65 high-strength plastic enclosure; operating −20 ~ 60 ℃.
- Heltec WirelessBoot — download firmware, exchange data, and print logs over Wi-Fi (no USB-UART bridge required).
- Compatible with Meshtastic; secondary development via Arduino / PlatformIO.
SENSOR TYPES
Each listing option ships the Capsule Sensor V3 base with one of the following sensor modules installed:
| Sensor Type | Module | What it adds |
| GNSS | Quectel L76K | Satellite positioning (L1/L5); typical accuracy <1 m — asset / pet / person tracking |
| Temperature-humidity | GXHTV3 | Temperature & relative humidity (±0.5 ℃ / ±5% RH) — climate & storage monitoring |
| 3-Axis | DA217 | 3-axis accelerometer (±1 g) — motion / orientation sensing |
| Barometric pressure | BMP280 | Barometric pressure & temperature (±1 hPa / ±1 ℃) — weather / altitude-related sensing |
SPECIFICATIONS
| Category | Details |
| Product Name | Capsule Sensor V3 — 902–928 MHz (choose Sensor Type) |
| MCU | ESP32-S3FN8 |
| LoRa Chip | SX1262 |
| LoRa Frequency | 902–928 MHz (US915 / commonly called 915 MHz) |
| Max TX Power | 21±1 dBm @ 902–928 MHz |
| Receiving Sensitivity | −135 dBm (SF12 / 125 kHz); −130 dBm (SF10); −124 dBm (SF7) |
| Wi-Fi | IEEE 802.11 b/g/n, 2.4 GHz (built-in antenna) |
| Bluetooth | Bluetooth LE, Bluetooth 5, Bluetooth mesh (built-in antenna) |
| Memory | 384 KB ROM; 512 KB SRAM; 16 KB RTC SRAM; 8 MB SiP flash |
| Battery / Charging | Built-in 3.7 V Li-ion, 250 mAh. Charge 5 V via magnetic 2P-2.54 mm. Battery included. |
| Sleep Current | ~18 µA (typical) |
| Protection | IP65 |
| Operating Temperature / Humidity | −20 ~ 60 ℃; 10%–90% RH (non-condensing) |
| Dimensions | 47 mm × 26 mm ⌀ |
| Product Weight | 23 g |
| Compatibility | Meshtastic, LoRaWAN, Arduino, PlatformIO, Heltec WirelessBoot |
WHAT'S INCLUDED
- 1 × Capsule Sensor V3 (902–928 MHz) with selected sensor module
- 1 × Magnetic charging cable
- 1 × Lanyard
NOTES
- This product is the 902–928 MHz configuration. Select Sensor Type at checkout (GNSS, Temperature-humidity, 3-Axis, or Barometric pressure).
- Firmware updates and logging use WirelessBoot over Wi-Fi (no USB data port on the capsule).
- GNSS works best outdoors with a clear view of the sky.
- Docs: product page, user docs, datasheet.
VIDEOS
Official Heltec basic function demonstration for the Capsule Sensor V3.
Official Heltec operation introduction for the Capsule Sensor V3.
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SKU:U0827
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