Before you buy the **Sonoff (Itead) S40ZBTPB**, check what's inside.

The Sonoff S40ZBTPB is a mains-powered smart plug that uses Bluetooth for connectivity and integrates with the Sonoff ecosystem via the eWeLink app. It allows for remote control and automation of connected appliances.

> ⚠️ **NOTE:** This device connects to mains voltage (110-240V). Always disconnect power before working on or near the device.

## Quick Specs

- **Manufacturer:** Sonoff (Itead)
- **Model:** S40ZBTPB
- **Protocol:** Bluetooth
- **Chipset:** ESP/CK Chip
- **Ecosystem:** Sonoff
- **App:** eWeLink

## 🔧 Geek Corner (Flashing Info)

- **Chipset:** ESP32 (likely)
- **Flashable:** ❌ No
- **Info:** Typically uses ESP32 variants with locked bootloaders or custom firmware that prevents easy flashing of alternative 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 **S40ZBTPB** is a **Bluetooth** device from the **Sonoff** ecosystem.