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SONOFFT1US Reset & Teardown (FCC ID 2APN5SONOFFT1US)

Factory reset and internal photos for Sonoff (Itead) SONOFFT1US. Sonoff smart plug.

January 15, 2026 1 min read

SONOFFT1US internal photo

Before you buy the Sonoff (Itead) SONOFFT1US, check what's inside.

This is a Sonoff T1 US smart wall switch, designed to replace a standard light switch. It offers WiFi connectivity for app control and integration with smart home ecosystems, as well as 315MHz RF for remote control.

⚠️ NOTE: Ensure mains power is disconnected before installation or wiring. This device requires both a live and neutral wire.

Quick Specs

  • Manufacturer: Sonoff (Itead)
  • Model: SONOFFT1US
  • Protocol: WiFi
  • Chipset: ESP/CK Chip
  • Ecosystem: Sonoff
  • App: eWeLink

🔧 Geek Corner (Flashing Info)

  • Chipset: ESP8266 (Likely)
  • Flashable: ✅ Yes
  • Info: Sonoff devices with ESP8266 are generally flashable, although specific models and firmware versions can vary. This model likely uses an ESP8266.

User Manual

Scanned pages from the official user manual:

SONOFFT1US Manual

SONOFFT1US Manual

External Photos

Photos of the device exterior:

SONOFFT1US Exterior

SONOFFT1US Exterior

SONOFFT1US Exterior

Internal Photos

Teardown photos showing the PCB and components:

SONOFFT1US PCB

SONOFFT1US PCB

SONOFFT1US PCB

SONOFFT1US PCB

Verdict

The SONOFFT1US is a WiFi device from the Sonoff ecosystem.

📄 Click to view full text manual (SEO)
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p 。wer Supp ly: 100V-240V AC 
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Wireless Standard: Wi- Fi 2.4GHz &31 5MHz RF 
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Checklist bef,。re using the device 
• y.。 ur smart ph 。ne。r tablet has
connected to a 2.4G WiFi with internet. 
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Q: My device。nthe app stays "Offline” ? 
A: The new added device needs 1-2min to connect 
to WiFi and the Internet. If it stays 。忏linefor a 
l。ngtime, please judge the problem by the blue 
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to server. Please ch旺k y。ur netw。rk connectivity. 
Scan the right QR c 。de to read the pairing 
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产局参数.
输入电压 :90-250V AC 50 /60Hz 
每路最大功率:600W/220V
WiF1标准: 2.4GHzb/g/n 
射湖言号: 315MHz 
材料 阻燃ABSVO级+钢化玻璃面板
使用该设备前请检查以下事顶:
· 您的智能手布磁平板巳连接上一个能上同的 2.4G WiFi. 
·使用安卓系统的手机或平板,系统必须是4 .0以上版本.
·使用苹果手机感iP ad 必须能够访问APP商店并下载APP.
·如果您的无线路由器设置了MAc±刨出庭 ,请先进入
路自器后台关闭MAC过滤功能.
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注事设备的齐美原理是通过控制电路火线的通断从而-跑揭工作和停丘
本设备必须零火线候息!设备拍旺销工作.
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