Energy Relays & Meters
$124.48lowest, at Amazon AU
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Buy at Amazon AUThis Shelly Pro 4PM is a four-channel relay module for mounting on a DIN rail in your switchboard. The brand says it delivers Wi-Fi and Bluetooth remote control plus energy monitoring for up to four loads, with a maximum capacity of 40A per load or 16A across all channels. It features a colour LCD screen, manual buttons, and connects via the Shelly Smart Control app.
Features and specifications in this description are as the brand describes them.
The Shelly Pro 4PM is a din-rail mounted relay designed to fit inside your breaker box. It is a 1-phase, 4-channel dry contact relay that adds Wi-Fi, Bluetooth and LAN connectivity to your existing electrical setup. Each channel can be controlled and monitored individually through the Shelly Smart Control app, which the brand says lets you manage devices remotely and set up alerts on your smartphone.
The device includes a 1.8-inch colour screen with physical buttons for navigation and status display, and per the brand offers precise power metering for each channel. The catalogue specs list overvoltage and overload protection as safety features. It supports weekly schedules and sunrise/sunset automation, and can integrate with third-party home automation platforms and voice assistants through your Shelly account.
Mounting inside a breaker box requires electrical knowledge and compliance with local building codes. The brand requires a Shelly Smart Control App user account to access remote control and third-party integrations. Physical buttons on the front allow local control if app access is unavailable.
Research-based: compiled from the manufacturer's information and Australian retailer listings. NXT Smart Home has not tested this product.
Best for: Homeowners wanting switchboard-level automation and individual power metering for up to four single-phase circuits via Home Assistant, Wi-Fi, or Ethernet.
The Shelly Pro 4PM is a four-channel smart relay module designed to mount directly onto a standard DIN rail inside an electrical switchboard. According to Shelly Europe, it features a switching capacity of up to 16 A per channel, with an overall device maximum of 40 A. Unlike standard in-wall relays, the unit incorporates a 1.8-inch colour graphic display and three physical navigation buttons on its faceplate, allowing users to inspect circuit status, view real-time electricity consumption, and manually toggle circuits without opening an app. It connects to home networks using 2.4 GHz Wi-Fi or a hardwired RJ45 Ethernet port, while Bluetooth 4.2 aids initial inclusion. Shelly lists built-in safety mechanisms including overvoltage, overpower, overcurrent, and overheating protection.
This unit suits homeowners and smart home enthusiasts seeking circuit-level power monitoring and automated switching directly from the main board or sub-board. With native support for Google Home, Amazon Alexa, Samsung SmartThings, and local Home Assistant integration via MQTT or Shelly's native API, it fits complex automations without forcing reliance on proprietary hubs. It also serves households wanting the reliability of wired Ethernet inside metal distribution boxes where wireless signals struggle.
However, it is not suitable for multi-phase distribution; Shelly specifies that all four switched channels must be wired to the same electrical phase. Furthermore, because the relay lacks dry contacts, it cannot control low-voltage circuits directly without external contactors. Renters should also skip this unit, as it alters fixed switchboard wiring.
The Shelly Pro 4PM operates on 110–240 V AC at 50/60 Hz, matching standard Australian 230 V single-phase mains. Because it installs inside a mains distribution board, it is generally work for a licensed electrician; check your state or territory electrical safety regulator.
When connecting inductive loads common in Australian homes, such as ceiling sweep fans, bathroom exhaust fans, or commercial LED drivers, Shelly documentation mandates fitting an external RC snubber across the load to protect the internal relays from voltage spikes. Shelly also notes that the RJ45 network cable must only be connected or disconnected while the unit is completely powered down. Australian retailers such as Oz Smart Things and SmartHome Australia supply the unit with local 1-year or 2-year warranties, alongside Shelly's global 5-year Pro warranty when dealing directly with the manufacturer.
Specifications are sourced from the manufacturer listing. Confirm details on the retailer's product page before purchasing.
Prices are indicative and in Australian dollars — confirm on the retailer's site.We may earn a commission from links on this page, at no extra cost to you. Read our full disclosure.
Yes, the device has three physical press buttons on the front plate that let you navigate menus and control channels locally. You need the app for remote access and third-party integrations, which the brand says requires a Shelly Smart Control App user account.
Per the brand, the Pro 4PM supports up to 40A for a single load or up to 16A total from all four connected loads combined.
It can be integrated with third-party home automation and voice assistant platforms, but this requires setting up your Shelly Smart Control App account and configuring the integrations within the app.
Reviews written by customers of the stores named on each review — not by NXT Smart Home, and not a test result.
130
customer reviews from Shelly (global store) and brack.ch and 23 other sources
No overall score is shown under 20 reviews from Australian sources.
Customer reviews syndicated from Shelly (global store) and brack.ch and 23 other sources. We do not edit them, and we cannot confirm the reviewers bought the product. They come from retailers in Australia and overseas, and each review says where it was posted; Australian sources are listed first and overseas ones may not reflect Australian stock, pricing or warranty.
The score and the star bars count only reviews from Australian retailers and the brand's Australian site. Overseas reviews, including the brand's global store, are shown but not counted.
Reviews may relate to a different variant, bundle or colour. Check the retailer's page for the exact item before buying.
It looks good. Apparently working well. Let's see in the duration. Disappointed because I wrote and email to the customer service, and never got an answer.
This review is from Shelly (global store)
Posted 5 October 2025 by A.H.
I'm building a virtual thermostat for our house. The [****] Pro 4PM is exactly what we needed for controlling a 3-speed (+ 1 valve) fan-coil convector. Works great!
This review is from Shelly (global store)
Posted 5 November 2025 by И.Н.
I was surprised about the tax payment. I will be happy to know next time the fix cost to my home.
This review is from Shelly (global store)
Posted 5 September 2025 by A.B.
Software and app are 5 stars PERFECT Electrical terminal and buttons are UGLY
This review is from Shelly (global store)
Posted 5 January 2026 by L.Z.
Great device, I would love the option to have a similar device with 25A outputs
This review is from Shelly (global store)
Posted 5 January 2026 by C.A.
Delivery more than 21 days, this is a shame.
This review is from Shelly (global store)
Posted 5 January 2026 by G.Č.
INotget this Part delivert. Still waitting
This review is from Shelly (global store)
Posted 5 November 2025 by A.S.
Unit received with 6 loose screws
This review is from Shelly (global store)
Posted 5 January 2026 by J.V.E.
Lowest price we recorded across Australian retailers, last 30 days.
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Compare stock availability and AUD pricing across verified Australian retailers. Prices checked 22 October 2026 — confirm on the retailer's site.
