SHELLY PRO 3 specification sheet

Overview:

Shelly Pro 3: Advanced 3-Channel Relay for Efficient Automation
The Shelly Pro 3 is a state-of-the-art 3-channel relay designed for professional automation applications in both residential and commercial environments. Ideal for controlling a variety of electrical appliances, including lighting and temperature systems, this device supports high-voltage and low-voltage outputs, making it versatile for a wide range of automation tasks. With Wi-Fi, LAN, and Bluetooth connectivity, Shelly Pro 3 offers flexibility, security, and reliability, all while maintaining a focus on energy efficiency and ease of use.

Features:

Key Features of Shelly Pro 3:

• Flexible Connectivity : Supports LAN, Wi-Fi, and Bluetooth for seamless control and reliable communication.
• High Power Capacity : Provides up to 48A of total output across three channels, with 16A maximum per channel, ensuring sufficient power for demanding automation tasks.
• Dry Contacts : Compatible with a wide range of output voltages, offering flexibility for various setups.
• Enhanced Security : Includes advanced safety features like overpower and overvoltage protection, ensuring safe operation under varying conditions.
• Full Control : Easily managed through the Shelly app and supports various protocols, voice assistants, and KNXnet/IP communication for complete integration.
• Scripting and Automation : Built-in scripting capabilities, including mjS scripting, allow for advanced automation functions and customizations.
• Temperature Sensor : Includes an internal temperature sensor for precise climate control.

A Smart Solution for Every Need
The Shelly Pro 3 is not just a relay; it's an intelligent control system designed to optimize energy use, enhance convenience, and provide seamless automation for homes and businesses. Whether you're automating lighting in large spaces or controlling HVAC systems, this device offers a reliable, user-friendly solution.

Energy-Efficient Lighting Control
Shelly Pro 3 excels in energy-efficient lighting automation. By controlling multiple light circuits, it allows you to reduce energy waste in common areas like hallways, garages, and storage rooms, where lights are often left on unnecessarily. With its built-in scheduling features, Shelly Pro 3 ensures lights are only on when needed, optimizing energy consumption. Integration with motion sensors, like the Shelly Motion2, further enhances automation by turning lights on when someone enters a room and off when the room is empty.

Dynamic Temperature Control for Commercial Spaces
Maintaining the perfect temperature is crucial in environments like hotels, meeting rooms, and restaurants. Shelly Pro 3 allows for precise control of HVAC systems, including motorized valves for heating and cooling, ensuring comfort while preventing energy waste. By using smart schedules, temperature sensors, and weather data, you can adjust the system dynamically to meet the changing needs of the space. This capability ensures optimal indoor climate control, enhancing both guest and employee comfort while reducing energy costs.

Comprehensive Automation for Commercial and Residential Spaces
With the ability to control up to three separate channels, Shelly Pro 3 provides comprehensive automation capabilities. It's perfect for applications where multiple systems need to be managed simultaneously, such as lighting, heating, and other electrical appliances. The integration of various communication protocols makes it highly adaptable to different smart home or commercial automation setups, offering a truly flexible solution for modern building management.

Advanced Scripting and Customization
Shelly Pro 3 stands out for its powerful scripting capabilities. Users can create custom automations and configurations through mjS scripting, expanding its functionality beyond the basics. This feature allows for a personalized automation experience, tailored to the specific needs of the user, whether for energy-saving routines, security systems, or operational efficiencies.

Whether you're upgrading a residential property or managing a commercial building, Shelly Pro 3 provides the tools for a smarter, more efficient space. With its robust design, advanced features, and easy integration with other smart devices, it's an excellent choice for modern automation.

Specifications:

©2026 Respective owners and brand holders. This table has been carefully researched and generated by ComXpert International CC (//www.comx.co.za), however, errors and omissions may occur. Only references to South Africa apply. All products are sourced in South Africa from the official suppliers and the warranty is that of the local supplier. E&OE. This table and our site's content may be used on condition that this notice and link remains intact and unaltered.
Specifications
Product Code	SHELLY PRO 3
Physical
Size (HxWxD)	96x53x59 ±0.5 mm / 3.78x2.01x2.32 ±0.02 in
Weight
Mounting	DIN rail
Screw terminals max torque	0.4 Nm / 4.43 lbin
Conductor cross section	0.5 to 2.5 mm² / 20 to 14 AWG
Conductor stripped length	6 to 7 mm / 0.24 to 0.28 in
Shell material	Plastic
Color	Black
Environmental
Ambient temperature	-20 degreesC to 40 degreesC / -5 degreesF to 105 degreesF
Humidity	30 % to 70 % RH
Max. altitude	2000 m / 6562 ft
Electrical
Power supply voltage AC	110 - 240 V
Power supply voltage DC	N/A
Power consumption	< 3 W
Neutral not needed	No
Output circuits ratings
Max switching voltage AC	240 V
Max switching voltage DC	30 V
Max switching current AC	16 A per channel, 48 A total
Max switching current DC	16 A per channel, 48 A total
Sensors, meters
Internal-temperature sensor	Yes
Radio
RF band	24010- 2495 MHz
Max. RF power	<20 dBm
Wi-Fi protocol	802.11 b/g/n
Wi-Fi Range	Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
	(Depends on local conditions)
Bluetooth Protocol	4.2
Bluetooth Range	Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
	(Depends on local conditions)
MCU
CPU	ESP32-D0WDQ6
Flash	8 MB
Firmware capabilities
Schedules	20
Webhooks (URL actions)	20 with 5 URLs per hook
Scripting	Yes
MQTT	Yes
CoAP	No