Shelly Pro 3

Shelly Pro 3 | 3-Channel DIN Rail Smart Switch with LAN, Wi-Fi & Bluetooth

Shelly Pro 3 is a DIN rail mountable 3-channel smart switch with potential-free contacts, capable of switching three completely independent circuits, including 3-phase ones. Enhanced with Gen2 firmware flexibility and LAN connectivity, it provides professional integrators with numerous configuration options for end-customer solutions.

It can operate standalone in a local Wi-Fi network or be integrated into cloud home automation services. Shelly Pro 3 can be accessed, controlled, and monitored remotely from anywhere with an internet connection. The device features an embedded Web Interface for monitoring, control, and configuration.

Main Applications

• Residential (apartments, condominiums, homes)
• MDU (Multi-Dwelling Units such as hotels)
• Light commercial (small offices, retail stores, restaurants, gas stations)
• Government and municipal facilities
• Universities and colleges

Integrations

• Google Home
• Samsung SmartThings
• Amazon Alexa

Device InterfacesInputs

• 3 switch/button inputs (S1, S2, S3)
• 2 power supply inputs (N and L)
• 3 relay inputs (I1, I2, I3)

Outputs

• 3 relay outputs (O1, O2, O3)

Ethernet Port

1 RJ45 connector

CAUTION: Plug or unplug the LAN cable only when the device is powered off. The LAN connector must not have metallic parts exposed to the user.

Connectivity

• Wi-Fi
• Ethernet (LAN)
• Bluetooth

Safety Features

• Overheating protection

Supported Load Types

• Resistive (incandescent bulbs, heaters)
• Capacitive (electronics, motor start capacitors)
• Inductive with RC Snubber (LED drivers, fans, transformers, compressors)

User InterfaceInputs

1 tactile dome button

• Press & hold 5s: Reboot
• Press & hold 10s: Factory reset

LED Indicators

• Power (Red): Power supply connected
• Wi-Fi: Blue (AP mode), Red (STA not connected), Yellow (STA connected, no cloud), Green (Connected to Shelly Cloud)
• LAN (Green): LAN connected
• Out 1/2/3 (Red): Corresponding relay closed

Specifications

Category	Specification
Physical	Size: 96×53×59 mm | Weight: – | Mounting: DIN rail | Shell: Plastic (Black)
Environmental	Temp: -20oC to 40oC | Humidity: 30-70% RH | Altitude: up to 2000m
Electrical	AC Supply: 110-240V | DC Supply: N/A | Power Consumption: <3W | Neutral required: Yes
Output Ratings	Max AC Voltage: 240V | Max DC Voltage: 30V | Max Current: 16A per channel (48A total)
Sensors	Internal temperature sensor: Yes
Radio	Wi-Fi 802.11 b/g/n | Range: 30m indoors / 50m outdoors | Bluetooth 4.2
MCU	ESP32-D0WDQ6 | Flash: 8 MB
Firmware	Schedules: 20 | Webhooks: 20 (5 URLs each) | Scripting: Yes | MQTT: Yes | CoAP: No