Ogemray 25A Smart Relay
The Ogemray 25A Smart Relay switches one circuit at up to 25 A or 6000 W, meters what it uses, and runs Shelly firmware over Wi-Fi.
$39.95 inc GST In stock · ships today
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3-year warranty Backed by Shelly
Everything you need to know
The Ogemray 25A Smart Relay is a Powered by Shelly relay for heavy loads, switching one circuit at up to 25 A or 6000 W with power metering. It runs over Wi-Fi with no hub, and needs a licensed electrician to install.
Product features
Built for the big loads
It switches a single circuit at up to 25 A or 6000 W, through large terminals that take 2.5 mm² to 6 mm² conductors. Overpower protection switches the load off when it draws too much, and overvoltage protection recovers on its own once the supply settles.
- 25 A / 6000 W, one circuit
- 2.5 to 6 mm² terminals
- Overvoltage and overpower protection
Ogemray hardware, Shelly firmware
Ogemray builds the relay and Shelly supplies the firmware, as part of Shelly's Powered by Shelly programme. It adds to the Shelly Smart Control app like any Shelly, has the same local web interface, and supports scripting, webhooks, MQTT, WebSocket and KNXnet/IP.
- Shelly Smart Control app
- Local web interface
- Scripting, MQTT and KNXnet/IP
Measures power usage in real time
Power metering shows what the circuit draws and how much energy it uses over time, which matters most on the loads this relay is built for, like a hot water system or a workshop circuit.
- Live power draw and energy history
- One circuit at up to 25 A
- 60 x 51 x 24 mm, with mounting bracket included
Automations stored on the relay
Schedules and scripts run on the relay itself, so they keep working through an internet outage. It also speaks MQTT, webhooks and KNXnet/IP for other systems, and has its own local web interface.
- Schedules and scripts run on the device
- MQTT, webhooks and KNXnet/IP
- Overvoltage and overpower protection
What is a Shelly relay?
A relay is a small module that hides in the wall box behind a switch, or on the rail in your switchboard, wired in between the power and whatever it controls. That might be a light, an exhaust fan, a towel rail, a pump, or the motor that opens your garage door. Nothing on show has to change. The switch stays on the wall and keeps working exactly as it does now, and the same circuit can also be turned on from your phone, on a schedule, or by an automation.
The number
One channel per circuit
The number in the name is how many things the module can switch on its own, from one up to four. A single light or exhaust fan takes a 1. A double light switch controlling two separate lights takes a 2, and each side still works on its own. The Pro 4PM goes up to four.
Pro and Mini
Where the module lives
Everything else in the name is about size and place. The standard module sits in the wall box behind your switch, and the Mini is a smaller version of it for when there is very little room left in the box. Pro units are built for the switchboard, clipping onto DIN rail, which is where whole circuits and three-phase work belong.
PM
What PM on the end means
PM is power measurement. Those models report what the circuit is drawing and the energy it has used over time, alongside the on or off state, so you can see what a heater or a pool pump actually costs to run. Models without PM switch the circuit and tell you nothing about it.
Gen 3 and Gen 4
What the generation changes
The generation tells you which protocols the module speaks. Gen 3 is Wi-Fi and Bluetooth. Gen 4 adds Zigbee and has Matter built in, though it runs one or the other, not both at once. The wiring, the app and the local control are identical. Pro units carry no generation in their name.
The existing controls
Nothing you already use stops working
The switch on the wall keeps doing what it has always done, and so does the button inside the garage. Whatever controls that circuit now carries on working, and the relay adds a second way in from an app, a schedule or a voice assistant. Nobody in the house has to change how they do things.
Smart bulbs
Smart lights that stay reachable
Smart bulbs only work while they have power, so one flick of the wall switch makes them unreachable via an app, like Philips Hue. Set the relay to Detached and the bulbs stay powered while the switch becomes a button your smart home can read, which is how a system like Home Assistant gets the switch and the bulbs working together again.
Works with
Connects over
On your Wi-Fi
Joins your home network, so you control it from the app with no hub or bridge.
-
Wi-Fi
Set up over Bluetooth
Used once, to get it onto your Wi-Fi.
-
Bluetooth
Works offline
Keeps working on your home network when the internet is down.
Scripts
12
Give it jobs the app can't
Scripts add jobs the relay can't do with the Shelly app's schedules and actions alone, like acting on the weather forecast or sending an alert to your phone. Each one is a small program that runs on the relay itself: copy it, paste it into the device's script editor and press Start. It doesn't need a hub, a cloud account or a subscription.
-
Heating & hot water Cap how many hours a heater or pump runs each day -
Lighting Control a Philips Hue room from a wall switch -
Garden Garden watering that skips the run when it rains -
Safety Holiday lights that come on at a different time each night -
Heating & hot water Hot water or pool pump on off-peak times, with a boost switch -
Network Internet watchdog that restarts your modem
Scripts are free; installing one takes about two minutes.
Which relay do I need?
Gen3 is the value pick for everyday Wi-Fi setups. Gen4 adds an upgraded processor, Wi-Fi 6 and Zigbee. Matter is on out of the box, so it pairs with Apple Home, Google Home or Alexa directly, without the need for the Shelly app. Pro is built to go inside your switchboard, clipping onto the same DIN rail as your circuit breakers, and connects over Ethernet as well as Wi-Fi.
If you want a reliable relay behind a switch at the lowest price, and you run the Shelly app or Home Assistant over Wi-Fi, Gen3 does the job. For a new setup, Gen4 is the one we'd pick. If you already run a Zigbee network, Gen4 slots straight into it, and because every Gen4 relay is also a Zigbee repeater, each one you add extends and strengthens that network. A relay on Zigbee gives up Matter and its own settings page, so you choose which each one runs. And if you're searching for Gen2, it shipped under different names, the Plus and Pro ranges.
| Feature | Gen3 | Gen4 | Pro |
|---|---|---|---|
| Best for | Everyday Wi-Fi setups on a budget | New setups and Matter or Zigbee homes | Switchboards and bigger jobs |
| Connects over | Wi-Fi Bluetooth | Wi-Fi 6 Bluetooth Zigbee | Wi-Fi Bluetooth Ethernet |
| Matter | On some models, turned on in settings | Built in and on by default | Not supported |
| Mounting | Behind the switch or power point | Behind the switch or power point | DIN rail in the switchboard |
| Price from | $24.95 | $34.95 | $89.95 |
Behind the switch
Fits in the wall cavity behind an existing switch or power point. The switch on the wall stays and still works; the relay sits behind it and makes the circuit smart.
In the switchboard
Clips onto the standard rail in your switchboard, next to the circuit breakers. Keeps everything in one serviceable spot, which suits whole-home installs and bigger jobs.
Specifications & Installation
No specifications match.
Build
- Type
- Module
- Channels
- 1 channel
- Housing material
- Plastic
- Power
- Hardwired
- Supply voltage
- 110–240 V
- Standby power
- 1.2 W
- Max current per circuit
- 25 A
- Neutral required
- Yes
- Dry-contact mode
- No
- Energy monitoring
- Yes
- Drives blinds & shutters
- No
- Local control
- Yes
- Standard
- 802.11 b/g/n
- Range (indoors)
- 30 metres
- Version
- 5.0
- Range (indoors)
- 10 metres
- Operating temperature
- -20–40 °C
- Operating humidity
- 30–70 % RH
- Max altitude
- 2000 metres
- SKU
- SHE-RLY-0019
- MPN
- Ogemray SW40 PbS
- Barcode
- 3800238070885
Wiring diagrams
Circuit overview
Active (supply)Neutral / 0 VSwitched load
In Australia, fixed 230 V wiring is licensed-electrician work. Use these diagrams to plan the job and brief your electrician.
Showing the whole circuit
What you can do with it
Run the hot water on off-peak or solar
Put the hot water system on a timer, so it heats on overnight off-peak rates or in the middle of the day on your solar. One schedule on one circuit, and you can see what every heat-up uses. Control with any of
A warm towel rail on winter mornings
Schedule the rail for weekday mornings and it's warm when you step out of the shower, off again before you leave. No more discovering it's been heating an empty house all day. Control with any of 
Get a phone alert when the washing is done
A small meter behind the washing machine's power point sees the power drop when the cycle ends and sends a notification to your phone. No new machine, and nothing changes about how you use it. Control with any of 
Outdoor lights on at sunset, off at midnight
Porch, path and garden lights follow the sun through the year without you touching a switch. Run the lights you have from a Shelly relay, or fit Philips Hue outdoor lights, and set it up in their app or Home Assistant. Control with any of 
Run the pool pump when it costs less
The pool pump is one of the hungriest circuits in most houses, so schedule its runs into off-peak windows and see what each one uses. Changing the season's run times happens from the couch, not the pump shed. Control with any of 
Switch off an appliance left running
A metering relay on the heater's supply switches it off after the time you set, and can message you when it has been drawing power too long. The same alert can tell you the washing has finished. Control with any of Common questions
Quick answers before you buy. We test this gear ourselves. Can't find yours? Ask our Melbourne team
Yes. It wires into mains and needs a neutral, so in Australia a licensed electrician fits it.
It's Ogemray hardware running Shelly firmware, under Shelly's Powered by Shelly programme. It sets up in the Shelly Smart Control app and behaves like any other Shelly device.
It's 60 × 51.4 × 24 mm, bigger than an in-wall relay, and comes with a wall bracket and anchors.
It meters the voltage and current on the circuit it switches, so you can see what the load is drawing in the app.
No. It's Wi-Fi and Bluetooth only. The Bluetooth radio can also act as a gateway for Shelly BLU sensors.
Shelly · Ogemray 25A Smart Relay