Aqara Single Switch Module T1 (With Neutral) Review: A 10A Zigbee Relay That Keeps Your Old Switches
The Aqara Single Switch Module T1 (With Neutral) is a one-channel Zigbee relay that hides behind a switch, in a ceiling or inside an appliance, switches resistive loads up to 10A and 2500W, measures energy and keeps working with the wall switches and push buttons you already have. Owners say it pairs quickly and runs reliably with Home Assistant, Zigbee2MQTT and Apple Home through an Aqara hub, and use it for lights, water heaters, thermostats and pool filtration. The trade-offs are size, since many owners could not fit it behind a switch in a standard box, the neutral it requires, a higher price than generic Zigbee relays and a few reports of units that failed or tripped the breaker. For a local, hub-based smart home it is one of the most flexible relays around.
- Home Assistant and Zigbee2MQTT users
- Aqara and Apple Home setups
- Keeping traditional wall switches
- Water heaters and resistive loads
- Energy monitoring of one circuit
Pros
- Quick installation and pairing
- Works with existing switches and push buttons
- 10A, 2500W resistive load with energy monitoring
- Local control and solid Home Assistant and Zigbee2MQTT support
- Acts as a Zigbee router
- Overheating, overvoltage, overcurrent and overpower protection
Cons
- Often too large to fit behind a switch
- Requires a neutral wire
- Not rated for inductive loads such as pumps and motors
- A few reports of failed units and breaker trips
- Google Home, Alexa, Apple Home and Matter need an Aqara hub
- Pricier than generic Zigbee relays
Who is the Aqara T1 With Neutral for?
It is for anyone with a Zigbee hub or coordinator who wants to make an existing circuit smart without changing the switch or the fitting. Owners use it to automate a seventies chandelier instead of buying smart bulbs, to run a water heater from Apple Home through a day and night contactor, to control a simple thermostat away from home, to schedule pool filtration and to turn a mains-powered motion sensor into a connected one. It needs a neutral wire at the install point, which ceiling and junction boxes usually have.
What buyers love
Owners describe installation and pairing as quick and simple, with several saying it registered on the first try, and they praise its reliability over months of use. It works with whatever is already on the wall, regular switches, push buttons or none at all, which owners single out as rare among Zigbee relays and why one replaced an impulse relay with it. Home Assistant users call the integration flawless and welcome a device that needs no cloud, and one owner reads its power monitoring in Zigbee2MQTT while switching a 2 kW water heater with no trouble. Apple Home owners see it in the Home app once it joins an Aqara hub, and several have five or more installed around the house.
What to know before you buy
Size is the most common complaint: at 42.9 x 40 x 19.9 mm it is larger than a Sonoff Mini, and owners say it often will not fit behind a switch unless the box is deep, so many install it in the ceiling or the fitting instead, and the antenna lead can get in the way. It needs a neutral, Aqara sells a T1 that does not. A few owners report problems: two units that tripped the breaker and died within three months, one that was faulty out of the box, one that dropped off Home Assistant every few weeks and needed re-pairing, and one owner whose spa pump kept tripping it, which fits its spec, since it is not rated for inductive loads. The instructions are printed very small, it costs more than generic Zigbee relays, and Google Home, Alexa, Apple Home and Matter all require an Aqara hub. One owner says the power monitoring did not show up in Home Assistant's own Zigbee integration while it worked in Zigbee2MQTT.
Is the Aqara T1 With Neutral worth it?
Yes, if you have a Zigbee hub and room in the box. You get a 10A resistive rating, energy monitoring, overheating, overvoltage, overcurrent and overpower protection, power-off memory, local control and a Zigbee router that strengthens the mesh, with direct SmartThings and Home Assistant support. If your switch boxes are shallow, a slimmer relay is the better fit. If the box lacks a neutral wire, Aqara makes a separate T1 model for that case. For motors or pumps pick a relay rated for inductive loads.
Frequently asked questions
Does the Aqara T1 With Neutral need a hub?
Yes, it is a Zigbee device. It pairs with an Aqara hub, a SmartThings hub or a Zigbee coordinator such as Home Assistant's, and Google Home, Alexa, Apple Home and Matter reach it through an Aqara hub.
Will the Aqara T1 fit behind my light switch?
It measures 42.9 x 40 x 19.9 mm, which owners say is too big for many standard boxes behind a switch. It fits deep boxes, and many owners install it in the ceiling or inside the fitting instead.
Does the Aqara T1 With Neutral need a neutral wire?
Yes. Aqara sells a separate T1 module without neutral for boxes that lack one.
What can I connect to the Aqara T1?
Resistive loads up to 10A and 2500W, such as lights and water heaters. It is not rated for inductive or capacitive loads, so motors and pumps are a poor match.
Does the Aqara T1 measure energy?
Yes, it reports power use. Owners read it through an Aqara hub and in Zigbee2MQTT, and one found it missing in Home Assistant's own Zigbee integration.
Can I keep using my normal wall switch?
Yes. It works with a regular switch or a push button wired to its input, so the wall control you already have keeps switching the light.



