Before you buy the Sonoff (Itead) RM433R2, check what's inside.

The Sonoff RM433R2 is a 433MHz RF remote control designed for Sonoff RF Bridge and other compatible receivers. It offers a simple way to control smart devices from a distance.

⚠️ NOTE: Ensure correct battery polarity.

Quick Specs

• Manufacturer: Sonoff (Itead)
• Model: RM433R2
• Protocol: WiFi
• Chipset: ESP/CK Chip
• Ecosystem: Sonoff
• App: eWeLink

🔧 Geek Corner (Flashing Info)

• Chipset: Unknown
• Flashable: ❌ No
• Info: This is an RF-only remote and does not contain a microcontroller that can be flashed 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 RM433R2 is a WiFi device from the Sonoff ecosystem.

📄 Click to view full text manual (SEO)

The device has been evaluated to meet general RF exposure requirement. The device
can be used in portable exposure condition without restriction....