Heltec Vision Master E213
When every milliamp counts, this e-ink board delivers months of standby. Built for patient monitoring and low-maintenance mesh nodes.
Important: 915 MHz for United States
Always buy the 915 MHz version for use in the United States. The 868 MHz version (Europe) is not legal in America.
What Is The Heltec Vision Master E213?
Consider a scenario where your neighborhood watch needs a message board that stays visible during extended power outages. The Heltec Vision Master E213 combines an ESP32-S3 microcontroller with a 2.13" electronic paper display and optional SX1262 LoRa radio, creating a remarkably frugal communication platform.
The magic lies in that e-ink screen retaining its last message for up to 180 days without drawing a single watt. During deep sleep, the entire board sips just 20 microamps. Pair this with a modest solar panel and you have genuinely autonomous signage for community resilience planning.
Beyond the display, you get WiFi and Bluetooth connectivity built into the ESP32-S3, plus optional LoRa capability operating on the 915 MHz band. This flexibility means you can start with local wireless and expand to mile-spanning mesh coverage when ready.
Technical Specifications
| Chipset | ESP32-S3R8 (dual-core, 240 MHz) + SX1262 LoRa (optional) |
| LoRa Frequency | 915 MHz (US) - HT-VME213-HF variant required |
| Display | 2.13" E-Ink, monochrome, image retention for 180 days without power |
| Battery | External 3.7V Li-ion via SH1.25-2 connector, integrated charging circuit |
| GPS | No (not built-in) |
| WiFi / Bluetooth | WiFi 802.11 b/g/n + Bluetooth 5.0 LE + LoRa (optional) |
| Dimensions | Compact development board with u.FL/IPEX LoRa antenna connector |
| Special Features | USB-C, 20 microamp deep sleep, QuickLink sensor interface, GPIO, I2C, SPI, UART |
Detailed Description
Heltec offers three versions of the Vision Master E213: the base HT-VME213 without LoRa, the HT-VME213-LF for Asian frequencies, and the HT-VME213-HF supporting the 915 MHz band used across the Americas. Ensure you select the HF variant for RegionMesh compatibility.
Electronic paper shines in challenging lighting conditions where LCD and OLED screens wash out. Whether mounted in a sunny window or checked by flashlight during a nighttime situation, the display remains crisp. Full screen refreshes take approximately two seconds, making this better suited to status updates than rapid messaging.
Important: Only the HT-VME213-HF variant includes the LoRa transceiver necessary for mesh networking. Double-check your order before purchase, as some listings default to the non-LoRa version. Budget around $30-45 depending on supplier.
Buy Heltec Vision Master E213
Available through AliExpress with delivery to the US typically within 2-3 weeks. Remember: Select the HT-VME213-HF variant to get the 915 MHz LoRa module for mesh networking.
View On AliExpressMake sure to select the 915 MHz version for the United States
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