Shelly Plus 2PM
ESP32-based dual-relay WiFi/BLE smart switch with per-channel power monitoring via ADE7953, cover/shutter control mode, and 10A per channel. Flashable with Tasmota for local roller blind and dual light control.
$21.99
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Specifications
Certifications
Components
Dual-core Xtensa LX6 microcontroller at 240MHz with integrated WiFi 802.11 b/g/n and Bluetooth 4.2
Two independent single-pole relays each rated at 10A/240V AC for dual load switching or shutter motor control
High-accuracy energy metering IC providing per-channel voltage, current, active/reactive power, and energy measurement via SPI
Integrated 110-240V AC to 3.3V DC converter powering the ESP32 and relay circuits
Bus Interfaces
Shelly Plus 2PM
The Shelly Plus 2PM is a dual-channel smart relay with integrated power monitoring on each channel. Based on the ESP32, it's designed for controlling two independent loads or a single motorized cover/roller shutter.
Key Features
- ESP32 dual-core at 240MHz with WiFi and Bluetooth
- Two independent relays — 10A/240V each
- Per-channel power monitoring — voltage, current, power, energy via ADE7953
- Cover/Shutter mode — built-in support for roller blinds with position tracking
- Dry contact inputs — two switch inputs for physical buttons
- 110-240V AC power input (neutral required)
Tasmota Compatibility
- Flash via serial header or mgos-to-tasmota OTA
- Full dual relay control with independent switching
- Power monitoring via ADE7953 driver (auto-detected)
- Shutter mode via
SetOption80 1for motorized blinds - Supports Tasmota rules for interlock, position tracking, and automation
Cover/Shutter Mode
The 2PM is one of the best devices for Tasmota motorized blind control:
- Set interlock mode: relays cannot both be ON simultaneously
- Enable shutter support:
SetOption80 1 - Configure open/close duration for position calibration
- Control via MQTT, HTTP, or physical buttons
- Reports position percentage (0-100%)
Power Monitoring
Each channel reports independently:
- Voltage (V), Current (A), Active Power (W)
- Apparent Power (VA), Energy (kWh), Power Factor
Use Cases
7home-automation
Smart Switch
Build WiFi or BLE controlled relay boards for switching lights, appliances, and HVAC.
roller-blind-control
shutter-control
power-monitoring
dual-light-control
Energy Monitoring
Monitoring energy consumption of appliances, circuits, or whole buildings using pulse counting or current sensors.
Resources
Where to Buy
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