7.5-inch E-ink Display User Manual - v1.3 - Setup & Troubleshooting Guide

Oct 22, 2026

SyncSign 7.5-inch E-ink digital signage syncs with calendar systems such as Office 365, Google Workspace, MS Exchange, or custom in-house servers. It supports battery-powered, truly wire-free wall installation and offers long battery life up to seven months (six refreshes per day), plus supported API calling for third-party integration. The manual provides package contents, model specifications, network and Bluetooth/GPS setup, administrator login, hub pairing, Wi-Fi configuration, calendar authorization, and guidance for display setup and troubleshooting.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages1

Reading Time3 min

AccessFree to download

Contents

Introduction

What’s in the Box

Overview

Specifications

Setup

Features

Troubleshooting

FAQ

Warranty

Support

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7.5-inch E-ink Display User Manual
v1.3 | Contents
Introduction .......................................... 2
What’s in the Box .................................. 3
Overview ........................................... 4
Specifications ...................................... 5
Setup ............................................... 6
Features ............................................ 13
Troubleshooting ................................... 15
FAQ ..................................................... 16
Warranty ............................................... 17
Support ................................................ 18
1 |
Introduction
The SyncSign E-ink Display is a digital signage with the features of:
● Sync with existing calendar system: Ofﬁce 365, G-Suite (Google Workspace), MS Exchange, or customized in-house system.
● Battery-powered: with low battery consumption energy.
● Long battery autonomy time: up to seven months with one single charge (6 refreshes per day) .
● Truly wire-free installation: like a sticky note can be attached to the wall.
● Supported API calling: enables the possibility of a 3rd party integration.
Works well as room signage, hot desk tag, electronic shelf label, exhibition signage, etc.
2 |
What's in the box | | | |
Overview | | Speciﬁcations
Model D75C-LEWI Dimensions 183 (L) x 130 (W) x 9 (H) mm Weight 255g Screen Color Red, Black, White Resolution 800(H) x 480(V) Pixel Operating Temperature 0 ~ 40°C Battery 4000mAh Polymer Battery, Rechargeable Battery Life Up to Seven Months (6 Refreshes Per Day) Communication Distance 40m/131ft (No Obstacles) Charge USB Type-C Charging PAN Wireless Communication Bluetooth Low Energy
5 |
Setup
1. Connect the Hub to the Internet
(1) Download the SyncSign App (Search [ SyncSign ] on Google Play / App Store, or scan this QR Code); | | | | (5) Turn on the Bluetooth option of the phone;

(6) On the App home page, tap the [ + ] button and select [ Add a Hub ];

(7) Follow the instruction on the App to continue these operations:
● Select the Hub icon and network connection type;
● Select one of the 2.4GHz Wi-Fi hotspots which the Hub should connect to;
● Input the Wi-Fi credentials;
● Link the Hub with your account.
Note: Make sure the Location Permission enabled for SyncSign App, as it's required for Bluetooth scanning to work.
7 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | | | | Serial Number E-ink Screen Pin-hole

( Hub Pairing Mode )

Insert a paper clip to activate >> v1.68-V(v-69\#LT).B
Button ( WiFi Setup Mode ) | Battery Compartment

Sticker Area
| | | | | | | | | | |
7.5-Inch Display x 1 | |
7.5-Inch E-ink Display User Manual
v1.3
Quick Start Guide x 1 | | | | | | | | | | | | | | | | | | | | | |
| SyncSign | | | | | | | | | | | | | | [sync-sign.com/app](sync-sign.com/app)
(2) Create an administrator account and log in to the App;
(3) Power up the Hub with adapter and cable in the package;
(4) Press and hold the setup button of the Hub for 5s until the Hub LED light turns blue;
6

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Type C Connector
Anti Theft Screws
Screw Hole
Wall Mount Bracket
Back Cover
( Optional accessories are to be purchased separately. ) | | | | | | | | | | | | | | |
Pin Clip x 1 | | | | | | | | | | | | | | | | | Indicator light:
● When the Display is being charged, the light will be red, and will be off when fully charged.
● When in setup mode ( refer to page 9), the blue light will ﬂash, and the light will stop ﬂashing when exiting setup mode.
4 | | | | | | | | | | | | USB Power Cable x 1 Power Adapter x 1
3 | | | | | | | | | | | | | 2. Setup the Display to the A

FAQs

What calendar systems does the SyncSign E-ink display support?

It can synchronize with Office 365, G-Suite (Google Workspace), MS Exchange, or a customized in-house system.

How long can the battery last under normal refresh usage?

Battery life is up to seven months with one single charge, assuming six refreshes per day.

What is required during the setup process on the mobile app?

Enable Bluetooth on the phone, ensure the SyncSign app has Location Permission for Bluetooth scanning, then add a hub and enter Wi-Fi credentials.

Oct 22, 2026

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