S55 Reset & Teardown (FCC ID 2APN5-S55)
Factory reset and internal photos for Sonoff (Itead) S55. Sonoff smart plug.
January 15, 2026
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1 min read
Before you buy the Sonoff (Itead) S55, check what's inside.
The Sonoff S55 is a waterproof WiFi-enabled smart socket designed for outdoor or wet environments. It allows remote control and scheduling of connected appliances via the eWeLink app.
⚠️ NOTE: Ensure the device is installed by a qualified electrician and that all connections are properly sealed to maintain its waterproof rating.
Quick Specs
- Manufacturer: Sonoff (Itead)
- Model: S55
- Protocol: WiFi
- Chipset: ESP/CK Chip
- Ecosystem: Sonoff
- App: eWeLink
🔧 Geek Corner (Flashing Info)
- Chipset: ESP8285
- Flashable: ✅ Yes
- Info: Based on the ESP8285 chipset, it is likely flashable with custom firmware like 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 S55 is a WiFi device from the Sonoff ecosystem.
📄 Click to view full text manual (SEO)
Waterproof Wi-Fi socket
S55TPB
S55TPB
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