Heltec
Heltec Mesh Node T114
The Heltec Mesh Node T114 is a fixed LoRa device by Heltec, based on the nRF52840 microcontroller and the SX1262 LoRa transceiver. It transmits at up to 22 dBm with -148 dBm receive sensitivity and draws about 12 mA on average. It is compatible with Meshtastic and MeshCore.
Compatible with:MeshtasticMeshCore
Specifications
- Manufacturer
- Heltec
- Type
- fixed
- Microcontroller
- nRF52840
- LoRa transceiver
- SX1262
- Max TX power
- 22 dBm
- Sensitivity (SF12 BW125)
- -148 dBm
- Average draw
- ~12 mA
Estimated battery life
| Battery | Autonomy |
|---|---|
| 2,000 mAh | 6.9 days |
| 3,000 mAh | 10.4 days |
| 5,000 mAh | 17.4 days |
| 10,000 mAh | 34.7 days |
| 20,000 mAh | 69.4 days |
Theoretical range
| Antenna height | Range |
|---|---|
| 1.5 m | 10.1 km |
| 5 m | 14.3 km |
| 20 m | 23.5 km |
| 50 m | 34.2 km |
Line of sight at 915 MHz, stock 2.15 dBi antenna on both ends, receiver at 1.5 m. Range = min(FSPL, radio horizon).
Community builds with the Heltec Mesh Node T114
Have a Heltec Mesh Node T114? Share your buildFrequently asked questions
How long does a Heltec Mesh Node T114 last on battery?
At about 12 mA average draw, a Heltec Mesh Node T114 runs roughly 10.4 days on a 3000 mAh 18650 cell and 34.7 days on a 10000 mAh pack. Real-world life depends on transmit duty cycle, screen and Bluetooth use.
What is the range of a Heltec Mesh Node T114?
With the stock 2.15 dBi antenna at 5 m, the theoretical line-of-sight range is about 14.3 km. In practice terrain and obstacles reduce it; raising the antenna is the single most effective improvement.
Is the Heltec Mesh Node T114 good for a solar node?
Yes. Its low average draw (12 mA) makes it well suited to always-on, solar-powered relay nodes.