An infrared blaster is the cheapest smart-home upgrade there is - a small WiFi box that learns your existing remotes so your phone or voice assistant can run the air conditioner, TV, soundbar and fans. The killer use case in Australia is the aircon: switch it on from your phone before you get home in summer, schedule it, automate it. We compared ecosystems, IR versus RF coverage and honest owner ratings across six picks, from the 24 dollar LinknLink eRemote HA up to the 288 dollar SofaBaton X1S universal remote, with the Matter-certified TP-Link Tapo H110 taking the top spot.
How to choose a smart IR blaster in Australia
A smart IR blaster is a small WiFi box that learns the infrared signals from your existing remotes - air conditioner, TV, soundbar, fan - and replays them on command from your phone or a voice assistant. It is the cheapest way to make dumb appliances smart, because nothing gets replaced: the blaster becomes a smart universal remote for everything in the room. Choosing one comes down to four questions. IR only, or RF as well? Which ecosystem - Alexa, Google Home, Matter or Home Assistant? How many rooms? And is an app enough, or do you want real buttons in your hand? This guide compares six picks from around 24 to 288 dollars, including the classic BroadLink RM4 range.
The number one use case - making a dumb air conditioner smart
If you only do one thing with an IR blaster, make it this. Most Australian split-system air conditioners are driven by a basic infrared remote, which means a blaster can take over the lot: control the air conditioner with your phone from the train twenty minutes before you walk in on a 40-degree afternoon, set schedules, and say turn on the aircon to a speaker instead of hunting for the remote - exactly the Alexa air conditioner setup people search for. Pair it with a temperature reading - the RM4 Mini takes a sensor cable, the Tapo H110 doubles as a sensor hub - and the cooling responds to the actual room. Compatibility is broad across the big split-system brands but not universal, so check your specific model is in the app library before you buy.
IR vs RF - what each one can and cannot control
Infrared is a beam of light. It is what TV, aircon, soundbar and fan remotes use, it needs a clear line of sight, and it stops dead at a wall or a cupboard door. RF - radio frequency, typically 433MHz in Australia - passes through obstacles, and it is what motorised blinds, many ceiling fans and some garage doors listen to instead. That distinction decides your shopping list. Five of the six picks have no RF, which is fine for the classic TV-and-aircon setup, but only the BroadLink RM4 Pro speaks both. If you have RF blinds you would love on a sunrise schedule, or a ceiling fan with an RF remote, the RM4 Pro is the only pick that can run them - and no IR-only hub can be upgraded into the job later.
Alexa, Google Home, Matter and Home Assistant - pick your ecosystem
Every pick works with Alexa and Google Home, so voice control is table stakes - the differences live in the details. The Tapo H110 is the modern choice: Matter-certified, controlling 18 device types across more than 8,000 brands, and it slots into the same Tapo app that already runs cameras and smart plugs in many Australian homes. The SwitchBot Hub Mini is the gateway into the SwitchBot universe - curtain bots, sensors, button pushers - so it earns its keep twice if you go down that road. The LinknLink eRemote HA wears its niche in its name: it is the unit Home Assistant tinkerers gravitate to. For voice plus a solid app with the least fuss, the Tapo and the BroadLinks all get there.
Placement - line of sight rules everything
Where the blaster sits matters more than which one you buy. Infrared needs to see its targets, so the ideal spot is central and high - a bookshelf at head height beats a TV cabinet, and the enthusiast trick is to ceiling-mount the blaster like a smoke alarm, where it has an unobstructed line to every appliance in the room. Most picks fire IR in all directions at once, so think of coverage as a bubble around the unit rather than a pointed beam. Keep it out of drawers and cabinets, give it permanent USB power, and remember the one-per-room rule: a lounge blaster cannot run the bedroom aircon through a wall, but a second cheap unit in the bedroom solves that for under 25 dollars.
The RM Mini3 trap - and other mistakes to avoid
The biggest buying trap in this category has a model number. BroadLink discontinued the RM Mini3 years ago, but old stock still sells in Australian listings for only a few dollars less than the current RM4 Mini - and the two look nearly identical in photos. Do not take the bait: the RM3 sits on the older app platform, misses the sensor-cable support, and discontinued stock is the first to lose software attention. Make sure the listing says RM4 before you check out. Two more traps: these blasters join 2.4GHz WiFi networks, so make sure your router still broadcasts one, and no IR blaster can control Bluetooth-only gear - a device that never shipped with an infrared remote cannot be taught.
An app is brilliant for automations and voice, but a home theatre lives and dies by the remote in your hand - pausing a movie should not involve unlocking a phone and waiting for an app to connect. That is the gap the SofaBaton X1S fills: a physical smart universal remote with proper buttons, backed by a hub that speaks IR and Bluetooth, and widely treated as the successor to the discontinued Logitech Harmony. One press runs an activity - TV on, soundbar to the right input - and the whole household can use it without an induction course. At around 288 dollars it is a different class of spend, which is exactly why it is the stretch pick rather than the default.
Our verdict
For most homes the TP-Link Tapo H110 at around 42 dollars is the one to buy - Matter certification, the best owner rating here at 4.4 stars, control of 18 device types across more than 8,000 brands and a second job as a Tapo sensor hub make it the most complete IR blaster of the six. The LinknLink eRemote HA at around 24 dollars is the cheapest way in and the Home Assistant favourite. The BroadLink RM4 Mini at around 40 dollars is the proven classic - just never buy the old RM Mini3 by mistake. Building a SwitchBot home? The Hub Mini at around 51 dollars is your gateway. Got RF blinds or ceiling fans? The RM4 Pro at around 60 dollars is the only pick that speaks 433MHz. And for the home theatre, the SofaBaton X1S at around 288 dollars brings back real buttons.
Frequently Asked Questions
Do smart IR blasters work with Alexa and Google Home?
Yes - every pick in this guide works with both Alexa and Google Home. You pair the blaster in its own brand app first - BroadLink, Tapo, SwitchBot, LinknLink or SofaBaton - then link that account inside the Alexa or Google Home app, and the aircon, TV and fans it has learned show up for voice control. Saying turn on the air conditioner to an Echo or Nest speaker is exactly the setup most buyers are chasing. The Tapo H110 (around 42 dollars) goes a step further with Matter certification, and the LinknLink eRemote HA (around 24 dollars) is the pick Home Assistant users reach for.
Do IR blasters work through walls?
No. Infrared is light, not radio, so it cannot pass through walls, doors or cupboards - the blaster needs a clear line of sight to the device it controls, the same as pointing the original remote. That is why the rule is one blaster per room rather than one for the whole house. If you need to reach gear that hides behind walls or inside cabinets, radio frequency is the answer - the BroadLink RM4 Pro (around 60 dollars) adds 433MHz RF, which passes through obstacles and controls RF blinds, ceiling fans and some garage doors.
Can I control my air conditioner with my phone using an IR blaster?
Yes - this is the number one reason Australians buy one. Most split-system air conditioners ship with a simple infrared remote, and an IR blaster learns those signals so your phone app or voice assistant can send them instead. That means switching the aircon on from the train before you get home, scheduling it around bedtime, or tying it to a temperature sensor for real automation. Compatibility is broad but not universal - the apps carry huge code libraries for brands like Mitsubishi, Daikin, Fujitsu, Panasonic and LG, but check your specific model is supported before you buy.
What is the difference between IR and RF, and do I need both?
IR (infrared) is a beam of light - it controls TVs, air conditioners, soundbars and fans, but it needs line of sight and stops at walls. RF (radio frequency, usually 433MHz in Australia) passes through walls and cabinets, and it is what motorised blinds, many ceiling fans and some garage doors listen to. Most people only need IR, which every pick here handles. If you have RF blinds or fans you want automated, only one pick covers both - the BroadLink RM4 Pro (around 60 dollars) - because IR-only hubs like the RM4 Mini and the Tapo H110 cannot speak RF at all.
How many smart IR blasters do I need for my home?
One per room you want to control. Because infrared cannot pass through walls, a single blaster covers the devices that can see it - typically everything in one living room - and nothing beyond. The good news is the per-room price is low: a LinknLink eRemote HA at around 24 dollars or a BroadLink RM4 Mini at around 40 dollars in a bedroom is cheap insurance, and you save the dearer picks like the RM4 Pro for the main living area. Place each one centrally and high - on a shelf or ceiling-mounted - so its emitters reach every corner of the room.
Should I buy the BroadLink RM Mini3 if I see it cheaper than the RM4?
No. The RM Mini3 is the older, discontinued generation, and it still floats around Australian listings for only a few dollars less than the RM4 Mini. It sits on the older app platform, misses the sensor-cable support, and discontinued stock is the first to stop getting software attention. The RM4 Mini (around 40 dollars) is the current model with 4,600 reviews behind it - the few dollars saved on an RM3 is the worst trade in this category, so make sure the listing says RM4 before you check out.
Do smart IR blasters need a hub or a monthly subscription?
No subscription - every pick here is a one-off purchase, and the blaster itself is the hub. They connect straight to your 2.4GHz WiFi and are driven from the free brand app, so there is nothing to pay monthly. Two power notes: the SwitchBot Hub Mini (around 51 dollars) ships without a USB power adapter, so budget a spare phone charger, and all of these need a permanent power point or USB port. The SofaBaton X1S (around 288 dollars) bundles its own hub alongside the physical remote, so it is also complete out of the box.
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