Shelly Pro Dimmer 2PM

Shelly Pro Dimmer 2PM | DIN Rail 2-Channel Smart Dimmer with LAN, Wi-Fi & Bluetooth

Shelly Pro Dimmer 2PM is a DIN-rail mountable, two-channel smart dimmer designed for smooth and precise light control. It works standalone in a local Wi-Fi network or can be connected to cloud-based home automation systems. The device can be accessed, monitored, and controlled remotely from anywhere with an internet connection. It includes an embedded Web Interface for direct monitoring, control, and configuration.

Main Features

• DIN rail mountable design for professional installations
• Automatic dimming calibration for smooth dimming across the full range
• Switch/Button input mode for flexible wall control
• One/Dual button dimming control for versatile use
• Night mode for reduced brightness at night
• Min/Max brightness setting for precise control
• Button fade rate and transition duration adjustment
• Safety protections: over current, overvoltage, overpower
• Weekly schedules and auto on/off timers
• Local automation actions via Wi-Fi network
• Webhooks support for smart integrations
• Built-in BLE Gateway and Wi-Fi Range Extender
• Scripting for advanced automation
• Compatible with 3rd party platforms (Google, Alexa, SmartThings, Home Assistant)
• No hub required – fully functional standalone or cloud-connected

Use Cases

• Dim and control lighting brightness between 110-240V
• Automate light brightness based on schedules or ambient light
• Retrofit existing lighting while keeping original wall switches
• Sync lighting with sunrise/sunset automatically
• Set night mode brightness for comfort and energy savings
• Integrate with Google Home, Alexa, SmartThings, and Home Assistant
• Monitor real-time power usage of connected lighting
• Ideal for professional installations requiring DIN rail mounting

Integrations

• Amazon Alexa: On/Off, Brightness control
• Google Home: On/Off, Brightness control
• Samsung SmartThings: On/Off, Brightness control

Device Interfaces

• Inputs: 4 switch/button terminals (SW1, SW2, SW3, SW4)
• Power Inputs: 2 L and 1 N terminals
• Outputs: 2 outputs (O1, O2)
• Ethernet Port: 1 x RJ45
• Add-on Interface: Shelly proprietary serial interface

Caution: Plug in or unplug the LAN cable only when the device is powered off. The LAN connector must not have metallic parts exposed to touch. Connectivity

• Wi-Fi (802.11 b/g/n)
• Ethernet (LAN)
• Bluetooth 4.2

Safety Functions

• Overheating protection
• Overvoltage protection
• Overcurrent protection
• Overpower protection

Supported Load Types

• Dimmable LED lamps: up to 200 W/channel
• Incandescent bulbs: up to 200 W/channel
• Halogen lamps: up to 200 W/channel
• Iron-core transformer (low-voltage incandescent): up to 200 VA/channel
• Dimmable electronic transformers: up to 200 W/channel

User Interface

• One reset button (5s for AP mode, 10s for factory reset)
• LED indicators for Power, Wi-Fi, LAN, Output 1, and Output 2

Specifications

Parameter	Value
Size (HxWxD)	94×19×69 mm / 3.70×0.75×2.71 in
Weight	75 g / 2.7 oz
Mounting	DIN rail
Shell Material	Plastic (Lime)
Operating Temperature	-20oC to 40oC / -5oF to 105oF
Power Supply	110-240 V~ 50/60 Hz
Max Output Power	200 W per channel
Dimming Type	Trailing edge
CPU	ESP32-D0WDQ6
Flash Memory	8 MB
Wi-Fi Range	Up to 30 m indoors / 50 m outdoors
Bluetooth Range	Up to 10 m indoors / 30 m outdoors
Power Consumption	< 2 W
Firmware Features	Schedules, Webhooks, MQTT, Scripting