QUBINO Flush ZMNHBD3 Z-Wave 2 relays – the smallest double relay switch

(5 customer reviews)
  • Z-Wave Plus relay module adds individual and grouped On/Off commands to two devices
  • Compatible with toggle and pushbutton switches, as well as plug-in outlets
  • Add delayed/scheduled/responsive triggers to connected devices
  • Small device size allows for quick and easy installation in nearly any setting
  • Optional sensor input enables responsive automation scene implementation
SKU: B06XFC2V6M Category:
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Device detailed description

Add wireless Z-Wave controls to two devices with the Qubino Flush 2 Relay. This universal relay module turns up to two devices into smart Z-Wave devices to add into your Z-Wave network. This module is perfect for adding remote On/Off control to lights, appliances, fans, thermostats, and more. The Qubino Flush 2 Relay fits in behind a wall switch or plug-in outlet, between your selected devices and switch/outlet, and requires a neutral wire for setup. Connecting a digital temperature (sold separately) allows you to create responsive automation scenes. Command lights, fans, or plug-in devices to turn On/Off when a set temperature point is reached. The Qubino Flush 2 Relay also acts as a Z-Wave repeater to improve the range and stability of your Z-Wave network. Contents: Flush Relay 2 Module, Instruction Manual. NOTE: Remote commands using Z-Wave requires a Z-Wave network controller (sold separately). Warranty: 2 years. Manufacturer Part #: ZMNHBD3.

Features and specification

Integration Supported smart home integration

Interface Smart device connectivity interface

Manufacturer Smart device manufacturer

Item Package Quantity


Batteries Included?

Batteries Required?

Power Source



Item Weight

Frequently asked question

Hi, seems that you do not send to Miami? why is that? thanks

I’m in Miami... I never block to ship to Miami! Let check the shipping rules.

will this handle stove exhaust fan or bathroom exhaust fans?

We don't recommend using this module with motor loads like fans. If you'd like to use Qubino to automate a fan, we recommend the Qubino Single Relay which can handle more load than each of the relays on this Double Relay: https://www.amazon.com/Qubino-Monitor-ZMNHAD3-SmartThings-Smallest/dp/B01N7ZIEWL/ref=sr_1_7?keywor… see more We don't recommend using this module with motor loads like fans. If you'd like to use Qubino to automate a fan, we recommend the Qubino Single Relay which can handle more load than each of the relays on this Double Relay: https://www.amazon.com/Qubino-Monitor-ZMNHAD3-SmartThings-Smallest/dp/B01N7ZIEWL/ref=sr_1_7?keywords=Qubino&qid=1556546535&s=gateway&sr=8-7

Will this be strong enough to control a 240v, 1000w (4.2amp) electric baseboard heater. i know this is meant for lights, but it's rated for 10a

This will only supply 24 volts to the switched outputs so it won't work by itself. You could have it operate a separate 24V relay wired to your heater.

Does this relay work without a neutral wire?

No. Neutral is required.

5 reviews for QUBINO Flush ZMNHBD3 Z-Wave 2 relays – the smallest double relay switch


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52 %


52 %

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  • Anonymous

    Good, but it could use some improvements.

    It is serving the purpose I purchased it to do, integrated into a light fixture, to allow me to remote control a direct wire light over a stove. I cannot see this running light switches. The wire screw down blocks are too tight for standard solid copper wire in the house. You can force it in, you may even get it to screw down, maybe. Out of two wires, one stripped the screw at the height 14 gauge. Luckily it’s a fixture with an embedded switch and the had more stranded wire than needed so I used that. If this was a wall switch, I would have not trusted it. It would have been better with pigtails built into it. Also, it really needs to be able to reset the device without cutting power to it. Most zwave wall switches use toggle patterns to reset, even when in use for a while. This requires you to do the reset 5 toggles within 60 seconds of power on. Had no real issues pairing it to SmartThings and it’s been performing well. Will update with long term reviews of it as I use it more.

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  • Anonymous

    Failed after 1 Month of use.

    I purchased the QUBINO Flush ZMNHBD3 Z-Wave 2 relays to add lights to my front porch. I added the hardware to my Domoticz controlled Z-Wave shortly after purchase. I finally completed the project about a year after purchase. Before powering anything it worked fine. After powering 2 switching power supplies it went nuts and stopped working after an month.
    As a mesh network if any device fails it takes several with it until the controller assigns different return paths. It would also trip my UPS’ randomly on the same AC circuit be fore it stopped working. It did this 4 times (that’s how many times I re-included it) before it would no longer add to my controller. It would forget it’s connection to the controller causing me to re-include it without having to exclude it. Disappointed with Qubino. I really want their products to work.
    The Smartest House was patient and mostly helpful in troubleshooting via email. I have concluded the hardware is defective and is costing me money to return for warranty replacement. Now over 50 bucks, I would definitely not buy it again. If the one I get back does work, I’m not sure what to do with it. I don’t trust them enough to hide inside an electric box. It’s too much work to take it apart to reset.

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  • Anonymous

    A great start. The first problem occurs when you try ...

    Here is a product that should be leading the future of ‘Smart Things.’
    This thing is amazingly small, and handles both AC and DC voltages, and is priced right. A great start.
    The first problem occurs when you try to review documentation and try to understand what this product actually does. It seems that marketing people are responsible for all documentation, including technical specs and wiring, because you will be left wondering.
    It is a ‘two-relay’ product, and you can even see the two relays on the Amazon picture. Relay outputs are great because they isolate the connected system, and allow you to connect to anything with dry contacts. You should be able to hook up 24 vac from a simple passive transformer a drive a sprinkler solenoid. Or perhaps you do not know what you are connecting to, and are simply mimicking a button press, like for a garage door opener. Yes dry contact relay outputs are understood to give great flexibility. Any ‘I/O’ product you buy that uses a ‘relay’ almost always gives you both sides of a simple contact to do what you wish.
    But this device connects one side of those contacts to the power supply input of the device which is either line voltage AC mains (110-230VAC) or 24VDC. Once connected, the two relay outputs give you either the mains AC voltage, or 24VDC. So you can pretty much forget about most solenoids that run off simple 24vac, forget button presses for garage door openers, or, interface into other systems like alarm panels. It is almost mandatory for many applications to connect these outputs to offboard relays to get your dry contacts.
    Love 24VDC for the industrial world, but not much here (USA) in the consumer space. Try to find a 24VAC to 24VDC converter? They don’t exist if you want to use low voltage to drive this thing because mains AC is not available or undesirable in the environment you are operating.
    They would have been far better off putting one more terminal on there for the feed to once side of both relays, and putting a USB port on it to feed 5 vdc for a low voltage/low power device like this one.
    So the biggest issue……marketed as a relay output device, but not really….a forced 110-220VAC or 24VDC output (depending on the power supplied to unit). Wasted use of relays. They should just use back-to-back MOSFET solid state switches for AC/DC the way they are using this thing.
    Next issue, is the choice of low voltage DC. A simple Buck power supply circuit that takes wide ranging inputs with a tiny bridge rectifier and cap could do anything. Or just stick with a 5vdc usb port.
    Next issue is the lack of any indicator LED on unit to tell you whether it is operating, and whether it is accepting inclusion or exclusion commands for a Z-wave connection. After an hour of trying to get this onto my network, I just gave up. Wanted it to work. Bought tiny interposing relays and a small enclosure to stick it in. Have a small bridge rectifier, capacitor and $6.00 buck converter for my 24vac to 24vdc supply, but I could not get it connected, and have no idea if it is even operating with no blinky on the unit.
    Honestly, no one should be using this on dangerous mains power unless they know what they are doing, and are trained technically. This is not as simple as using an Insteon module in the wall junction box, with flying RATED leads, and RATED connectors provided. I struggle to believe that the tiny screw terminals on this device are rated for 120VAC let alone European 220VAC. And on their simple marketing brochure, they show fuses to be installed downstream of their outputs. WTF? Here, in the USA, that entire device, its internals, its terminals and the wire attached to the output MUST be capable of handling the whole fault current from the house breaker (15 amps here). No fuses needed, and certainly NOT downstream of the device.
    So, yes I gave up on this product, because it will not be around for long. The company needs less marketing people and a few real engineers.
    Thank you Amazon Returns.

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  • Anonymous

    It takes some work adding to SmartThings but after that’s done it works great.

    So far this thing works great for me with SmartThings. I had to add a device handler through Smartthings IDE which was kind of a pain figuring out, but there are some good walk through instructions online. Just Google this relay and SmartThings and read articles.
    I put this directly at my ceiling fan and now my young son can turn on/off the fan and lights separately using Amazon Echo dot. Before he was stuck with whatever settings someone else had set with pull strings.
    With this setup (at the fan instead of switch) the switch has to stay in the on position. But now I have three switches in SmartThings to control the ceiling fan. 1- unit as a whole (everything on or off.) 2- fan on/off. 3- Lights on/off.
    I suggest after purchasing go ahead and add device handler while unit is shipping so when you get it you can install it right away without having to wait.
    You want to do this before adding this to SmartThings otherwise you’ll be removing/unpairing it adding device handler then parring it again. With the setup at the fan unpairing isn’t easy to do.
    Gave 4 stars because of the extra setup you have to do but after it’s done it has worked great. It also tells how much energy is being used per relay and as a whole.

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  • Anonymous

    It DOES NOT work with 24VAC Sprinkler electric valves / solenoids.

    Although it shows on one the manuals the use of this device to manage two sprinkler zone electrical valves (24VAC), I was not able to make it work , after talking to tech support ( they responded to my email 4 days after), they said it DOES NOT work with 24 volts AC.

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