T2T3US Reset & Teardown (FCC ID 2APN5T2T3US)
Factory reset and internal photos for Sonoff (Itead) T2T3US. Sonoff smart plug.
January 16, 2026
•
1 min read
Before you buy the Sonoff (Itead) T2T3US, check what's inside.
The Sonoff T2T3US is a smart Wi-Fi in-wall switch designed for easy integration into your home automation system. It operates on standard mains voltage, offering convenient control via the eWeLink app.
⚠️ NOTE: Disconnect Mains before installation or maintenance.
Quick Specs
- Manufacturer: Sonoff (Itead)
- Model: T2T3US
- Protocol: WiFi
- Chipset: ESP/CK Chip
- Ecosystem: Sonoff
- App: eWeLink
🔧 Geek Corner (Flashing Info)
- Chipset: ESP8266
- Flashable: ✅ Yes
- Info: Uses ESP8266 chip, commonly flashable with Tasmota or ESPHome.
User Manual
Scanned pages from the official user manual:
External Photos
Photos of the device exterior:
Internal Photos
Teardown photos showing the PCB and components:
Verdict
The T2T3US is a WiFi device from the Sonoff ecosystem.
📄 Click to view full text manual (SEO)
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Smart Wi-Fi In-wall Switch
100~240V AC
100~240V AC
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433 RF
FCC Warning
This equipment complies with FCC RF radiation exposure limits
set forth for an uncontrolled environment.
This equipment should be installed and operated with a minimum
distance of 20 centimeters between the radiator and your body.
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