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TRMNL / TRMNL Technical Specifications
TRMNL-OG-GEN1

TRMNL OG

7.5" ePaper Dashboard

TRMNL OG
00

Overview

TRMNL is a battery-powered ePaper display that connects to your data sources and renders them as glanceable dashboards. Choose from 895+ pre-built integrations or build custom dashboards using any API with HTML/CSS templating.

Typical deployments include sales metrics, calendars, operational status boards, and internal announcements. One-way communication architecture ensures your network remains isolated — the device pulls data from the server, never the reverse.

01

Identification

Model
TRMNL-OG-GEN1
SKU
TRMNL-OG
UPC
TBD
02

Display

Screen Size
7.5 inches (diagonal)
Resolution
800 × 480 pixels
Pixel Density
128 PPI
Display Type
ePaper (EPD)
Grayscale
4 levels
Refresh Rate
~2 seconds
Viewing Angle
180°
Contrast Ratio
10:1
03

Physical

Dimensions (W × H × D)
171 × 116 × 10 mm
Weight
120 grams (1800mah battery), 165 grams (2500mah battery)
Enclosure Material
PC (transparent), ABS (other colors)
Color
Black, White, Transparent, Sage, (faux) Wood, Grey
Orientation
Landscape
Mounting Options
Desk stand (included), Hook recess
Water Resistance
No
Controls
Button
Logo Placement
Front of device
Custom Branding
Available
Zero-Logo Option
Yes
04

Power

Battery Type
Rechargeable Li-Po
Battery Capacity
1800/2500 mAh
Battery Life
3–6 months (typical use)
Charging Port
USB-C
Charging Time
3.5-5 hours
Refresh Interval
15 min (default), configurable
Power Consumption (Sleep)
< 0.5 mW
05

Hardware

Processor & Memory

Processor
ESP32-C3
RAM
400 KB
Flash Storage
4 MB

Wireless

WiFi Standard
802.11 b/g/n
WiFi Frequency
2.4 GHz
Security Protocols
WPA, WPA2

Sensors & Peripherals

Ambient Light Sensor
No
Temperature Sensor
No
Touch Sensor
No
Accelerometer
No
Buttons
1× reset
Status LED
Yes (charging status only)
06

Ecosystem

Firmware

Operating System
Custom firmware
License
Open source (GPLv3)
Source Code
github.com/usetrmnl/firmware
OTA Updates
Yes
License
GPLv3

Software

Connection Options
TRMNL Cloud or Self-Hosted (BYOS)
BYOS Server Implementations
Ruby, Python, PHP, Node.js, Elixir
Mashups
Up to 4 data sources per screen
Smart Playlists
Time-based and conditional logic
Fleet Management
Yes (Partners API)
License
MIT (OSS servers only)

API & Cloud

Cloud Sync
Yes
API
RESTful
Partner API
Yes
Webhook Support
Yes

Applications

Web Dashboard
Yes
iOS App
Yes (Calendar Sync)
Android App
Yes

Integrations

Published Plugins
895+ available
Custom Plugins
Supported (HTML/CSS/Liquid)
07

Security

Communication
One-way (device-initiated only)
Network Access
Device cannot be accessed remotely
Data Storage
User-controlled (Cloud or BYOS)
Encryption
TLS 1/1.1/1.2
GDPR Compliant
Yes
SOC 2
N/A
08

Environmental

Operating Temperature
0°C to 40°C / 32°F to 104°F
Storage Temperature
-20°C to 60°C / -4°F to 140°F
Operating Humidity
OG: 20% – 80% (estimate, not tested)
X: 20%-100%, test pending (main board only)
Storage Humidity
OG: 10% – 90% (estimate, not tested)
X: 20%-100%, test pending (main board only)
Altitude
0 to 2000m
Shock Resistance
Not tested
Vibration Resistance
Not tested
09

Compliance & Certifications

FCC (USA)
OG: Certified
X: Pending
CE (Europe)
OG: Certified
X: Pending
UKCA (UK)
OG: Japan, Canada
X: Pending
RoHS
OG: Certified
X: Pending
WEEE
OG: Compliant
X: TBD
10

Package Contents

TRMNL 7.5" Display
1
Desk Stand
1
Quick Start Guide
1
USB-C Charging Cable
0-1 (optional add-on)
Microfiber Cleaning Cloth
0-1 (optional add-on)
11

Warranty & Support

Warranty Period
1 year manufacturer defects
Support Channels
Live Chat, Email (direct to engineers)
Community
Discord, GitHub
Documentation
docs.trmnl.com
Firmware Updates
Lifetime OTA updates
RMA Process
Contact support
12

Ordering

Retail Price
$139 USD
Volume Pricing
Available
Minimum Order Quantity
150 units
Lead Time
Ships within 2 business days
Fulfillment Locations
USA, Berlin (duty-free EU)
Country of Origin
USA
13

Accessories

Developer Edition
API access for $20
Battery Upgrade
2500mah for $10
Clarity Kit
$25
BYOD License
$50