D1 Reset & Teardown (FCC ID 2APN5D1)

Before you buy the Sonoff (Itead) D1, check what's inside.

The Sonoff D1 is a Wi-Fi enabled smart dimmer switch designed to control light brightness remotely. It allows for scheduling, scene control, and voice commands via the eWeLink app and is compatible with Android and iOS devices.

⚠️ NOTE: Disconnect Mains power before installation or maintenance.

Quick Specs

Manufacturer: Sonoff (Itead)
Model: D1
Protocol: WiFi
Chipset: ESP/CK Chip
Ecosystem: Sonoff
App: eWeLink

🔧 Geek Corner (Flashing Info)

Chipset: ESP8285
Flashable: ❌ No
Info: Sonoff devices often have locked bootloaders or proprietary chipsets that prevent easy flashing with custom firmware like Tasmota.

User Manual

Scanned pages from the official user manual:

D1 Manual

External Photos

Photos of the device exterior:

D1 Exterior

Internal Photos

Teardown photos showing the PCB and components:

D1 PCB

Verdict

The D1 is a WiFi device from the Sonoff ecosystem.

📄 Click to view full text manual (SEO)

User manual V1.0 
Wi-Fi Smart Dimmer Switch 
· 中 文 ------- ------- 1 - 3 
· Deutsch ----- -------- 8-11 
· Franç ais ---------- 16 -19 
· Русский язык ---- -24 -27 
· English ----- --- 4 - 7 
· Españ ol --- --- 12 -15 
· Italiano ------- 20 -23 

SONOFF TECHNOLOGIES CO., LTD. English 
Specifications 
Model 
Input 
D1 
100 -240V AC50 /60Hz 
100 -240V AC50 /60Hz Output 
Light Load Incandescent ：200W LED :150W 

Operating systems （Android 4.1 & iOS 9.0 ）or higher 
Wi-Fi IEEE 802.11 b/g/n 2.4GHz 
PC Material 
Dimension 62x47x3 2.5mm 
Features 
D1 is a Wi-Fi smart dimmer switch that is used to adjust 
the light brightness and set various atmosphere for your 
room. You can remotely turn on/o ﬀ light of your home 
anywhere, schedule it on/o ﬀ , or share it with your family 
to control toget her. 
Remote Control Single/Countdown 
Timing 
Voice Control 
1 

SONOFF TECHNOLOGIES CO., LTD. English 
Share Control Brightness Adjustment Scene Mode 
 Sync Status LAN Control 
2 

SONOFF TECHNOLOGIES CO., LTD. English 
Buttons Functions 
On 
Off 
Short press for the low brightness, long press 
to turn down the brightness 
Short press for the medium brightness, long 
press to turn down the brightness 
Short press for the higher brightness, long 
press to turn up the brightness 
Short press for the high brightness, long press 
to turn up the brightness 
Long press for 5s until you hear “Bi Bi” and 
release, then the remote controller is cleared 
successfully. If you need to use, short press 
any button within 5s after pow ering on again 
and you will hear “Bi”, which indicates the 
remote controller is paired successfully. 
Long press for 5s until the connected light 
enters the breathing mode, which indicates 
the device enters quick pairing mode (Touch), 
then you can add the light on eWeLink APP. 
In quick pairing mode, you can short press 
any button on the remote controller to exit this 
mode. 
3 

SONOFF TECHNOLOGIES CO., LTD. English 
Factory Reset 
Turn on and oﬀ 3 times on repeatedly or delete the 
connected light on eWeLink APP until it enters “breathing 
mode”, then the device is reset successfully and enters 
quick pairing mode (Touch). 
D1 
Setting 
Delete 
Please reset the switch to factory defaults if you want to 
use other Wi-Fi networks, then reconnect the network. 
4 

FCC Warning 
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) 
this device may not cause harmful interference, and (2) this device must accept any inte rference received, 
including interference that may cause undesired operation. 

Changes or modifications not expressly approved by the party responsible for compliance could void the 
user's authority to operate the equipment. 

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, 
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against 
harmful interference in a residential i...