Aeotec Pico Duo Switch Review: Two Metered Channels in a 44 mm Zigbee Relay
Dual relay with energy monitoring, Matter support, inductive load handling and Zigbee router duties, at just 0.5 W idle.
The Aeotec Pico Duo is a compact in-wall Zigbee relay that switches two circuits independently, meters their consumption, and supports Matter alongside SmartThings, Google Home and Home Assistant. It stands out from cheap relays in three ways: it handles inductive loads up to 3.6 A rather than resistive only, it works as a Zigbee router to strengthen the mesh, and it supports over-the-air firmware updates. At 44 x 40 x 21.5 mm it fits behind a switch, and idle consumption is a low 0.5 W. It needs a neutral wire and a Zigbee hub.
- Two-circuit switch plates
- SmartThings and Home Assistant setups
- Metering lighting circuits
- Loads including fans and transformers
Pros
- Two independent channels in a 44 x 40 x 21.5 mm module
- Energy monitoring per circuit
- Handles inductive loads up to 3.6 A, not just resistive
- 15 A resistive rating across 110-230 V
- Matter support alongside SmartThings, Google Home and Home Assistant
- Acts as a Zigbee router and supports OTA firmware updates
- Overheating and overcurrent protection
- Very low 0.5 W idle consumption, plus DIN rail mounting and a manual button
Cons
- Requires a neutral wire and a Zigbee hub
- No overvoltage or overpower protection
- No dry contact mode, so it cannot act as a volt-free switch
- No interlock or roller mode for motorised shutters
- Apple HomeKit and Alexa support are not documented, and IFTTT is unsupported
- Maximum load in watts is not documented
Who is the Aeotec Pico Duo for?
It is aimed at a proper installation rather than a quick gadget: two circuits from one module, mounted in a back box behind an existing switch or on a DIN rail in a panel. Aeotec is well established in the SmartThings world, and both SmartThings and Home Assistant are documented as supported, with Matter available too, which is unusual for an in-wall relay and means it can join a Matter setup rather than being locked to Zigbee apps.
What it offers
Two independent channels switching 110-230 V AC, rated 15 A for resistive loads and 3.6 A for inductive ones, which matters because fans, transformers and some LED drivers are inductive and cheaper relays simply do not list support for them. Energy monitoring reports consumption per circuit, and power-off memory decides what happens when the mains returns. Safety coverage includes overheating and overcurrent protection. It acts as a Zigbee router, so as a permanently powered device it relays traffic for battery sensors, and OTA updates mean firmware fixes can be applied without removing it from the wall. Idle draw is 0.5 W, which is low enough to be irrelevant on the bill, and there is a manual on/off button.
What to know before you buy
A neutral wire and a Zigbee hub are both required. There is no overvoltage or overpower protection, only overheating and overcurrent. Dry contact mode is not supported, so it powers loads directly rather than acting as a volt-free switch for a boiler or gate controller. There is no interlock or roller mode, so it should not drive a motorised shutter where two channels must never energise together. Apple HomeKit and Alexa support are not documented, and IFTTT is unsupported. Wireless switch mode, the decoupling feature for using a rocker as a scene button, is also undocumented. The maximum load in watts is not stated, only the current ratings.
Is the Aeotec Pico Duo worth it?
It costs more than a generic Zigbee relay, and the difference is real: metering on both channels, inductive load support, mesh routing, OTA updates and Matter compatibility. For a SmartThings or Home Assistant home doing a considered installation, that combination justifies the premium. For a single light circuit on a budget, a basic relay does the job for less.
Frequently asked questions
Can the Aeotec Pico Duo switch a fan or a transformer?
Yes, within limits. It supports inductive loads up to 3.6 A, alongside 15 A for resistive loads, which is more than most budget relays document.
Does it support Matter?
Yes, along with SmartThings, Google Home and Home Assistant. It still requires a Zigbee hub to operate.
Does it need a neutral wire?
Yes, a neutral wire is required, as is a Zigbee hub.
Can it drive a roller shutter?
No. Interlock (roller or cover) mode is not supported, and that is the mode that safely prevents both channels energising at once on a motor.
Does it help my Zigbee network?
Yes. It acts as a Zigbee router, relaying messages for other devices, and it supports over-the-air firmware updates.









