Review BlitzWolf Tuya ZigBee 3.0 Hub Gataway Smart Home

Review Blitzwolf BW-SS7 socket relay with Zigbee 3.0 interface or BlitzWolf Tuya ZigBee 3.0 Hub Gataway: Tuya Smart smart home, integration into Home Assistant 2022.

In this review, we will consider another product from a fairly well-known manufacturer BlitzWolf designed for use in the Tuya Smart smart home ecosystem. It is a compact controlled relay that allows you to automate the operation of lighting, power supply to household appliances and similar tasks. In addition to the standard control system, we will consider options for integrating into Home Assistant via zigbee2mqtt and SLS gateway.

Where can I buy?

Buy Blitzwolf BW-SS7 socket relay with Zigbee 3.0 interface on Banggood
Buy Blitzwolf BW-SS7 socket relay with Zigbee 3.0 interface on Aliexpress – Recommend!

BlitzWolf Tuya ZigBee 3.0 Hub Gataway Smart Home Bridge App Remote Control Work with ZigBee 3.0 Smart Home Alexa & Google home


  • Model: BW-SS7
  • Interface: Zigbee 3.0
  • Working voltage: 220 – 240 V
  • Maximum current: 10A
  • Peak power: 2300 watts resistive, and 250 watts for LED luminaires.
  • BlitzWolf App, Tuya, Smart Life
  • Body material: flame retardant plastic
  • Working temperature: -10 +45 ℃
  • Size: 46x46x18 mm


The device is delivered in a box decorated in white-green colors typical for the manufacturer. By the way, that’s why I chose a green background for this review. The front of the box contains the model number of the device and the manufacturer’s logo. On one of the sides, the parameters of the device are indicated, which I have already described. It should be noted that the model exists in two versions – for one and two control channels. The review deals with a single-channel one.

In addition to the relay itself, the delivery kit also contains a rather voluminous instruction. There is also a mark on the passage of quality control.

The manual is multilingual; in general, the devices of this series are intended for the global market, so you will not find hieroglyphs here. There is no English, but there is English.

From the useful there are connection diagrams for both versions of the relay, including the option of connecting through pass-through switches. By the way, resetting the device to factory and pairing mode is possible only when an external switch is connected, you need to turn on the relay 5 times in a row.


Externally – this is a classic version of the relay for installation in a socket box, square shape with beveled edges. I’ve already looked at such – from lonsongo and moes (see links to reviews at the beginning)

The relay is equipped with a special removable frame, it can be fixed on a DIN rail, or rigidly in a socket box. And the relay is already installed directly into it.

Everything keeps on latches, so you can install and remove without any special tools, while they are quite enough to securely hold the relay.

The terminal block is universal – for versions for 1 and 2 channels and has 6 screw terminals. Incoming zero and a phase, two outgoing phases and two contacts of an external switch. The review version requires 4 out of 6 clamps.

The relay easily fits into a standard round socket box, which are common in our country, so no reworking of the existing infrastructure is required – but remember that a zero line is needed for the relay to work.

As for the depth, you need to look at the specific model of the socket or switch used. Since there are also low-profile models that fit into a standard socket with a relay, there are options for which the depth may not be enough.

There is nothing interesting on the back side, but the case cover is fastened with 8 latches, 2 on each side. To disassemble them, gently pry them off with something flat.


Let’s start disassembling. Although screws or self-tapping screws are not used in the relay, the installation here is tight and everything is held by the precise adjustment of the dimensions of the printed circuit board and the case.

In order to get the board, you need to gently press the terminal block and slowly squeeze it out. There are no latches or screws inside.

The executive element is a 10A relay AFE BJ-SS-105DMF, and the control element is a Zigbee module from Tuya – TYZS3

The installation is neat, there are no traces of not washed off flux, there is nothing to complain about, everything is in perfect order.

And now the test for attentiveness – on the left is the hero of the review, Blitzwolf BW-SS7, with a beeper can be seen in the upper right part. And on the right is a Lonsonho relay with a zero line, which I talked about in one of my reviews earlier. It is called – find the differences. I can only name one thing right off the bat – there is an LED instead of a beeper.

Well, running ahead – I will say that apart from the beeper and the batch code of the Zigbee module, I did not find any differences between Blitzwolf and Lonsonho.


Let’s start connecting. At the initial stage, it is enough only to supply power to the relay, unlike versions without a zero line – no load is needed to turn it on. To determine the phase wire, a penny indicator screwdriver is enough.

The question is often asked – will a smart relay, switch or socket work if the phase and zero are mixed up. The answer is yes, it will, but the key point here is not in the operation of the device, but in safety. And it is for safety reasons that the relay of the device must break the phase, and not the zero line. We apply the phase to contact L, zero – to N.

When switching to pairing mode, the relay starts beeping loudly.

Tuya Smart

Let’s start the logical part with the native Tuya Smart application. Strictly speaking, the Blitzwolf application should be called native – but it is just a cropped clone of Tuya, so it makes sense to use the full version. In the zigbee gateway plugin, it must be in the system for this device to work, go to the add mode.

At the same time, the relay should beep. Within about a minute – the connection process will be completed and the squeak will stop. All that remains is to set a name and location for it, after which the device is added to the system.

The device will be accessible both from the list of the gateway to which it is connected and from the general list on the main screen. Here, not only switching on and off is available, but also the state of the timer.

The relay also has its own plugin. Most of the window is occupied by a field with an on and off button, at the bottom there is another, small button that will allow you to schedule the device to turn on or off at the desired time and day of the week.


Like most Tuya Smart devices, the relay can serve as both a trigger and an automation action. As a trigger – that is, a condition for triggering, there is a transition to one of its states – on or off.

For action – state switching has also been added, this is convenient, for example, when using a logic button or switch – each press with such an action will switch the relay to the opposite state.

Here is an example of such automation, a logical 4-key switch from MOES is used as a trigger here, which I also talked about in one of my previous reviews. I’ll show you how it all works a little further.

Google home

Let me remind you that the Tuya Smart account is connected to the Google Home system, this is done in the Device compatible with services section. After that, all connected devices will automatically register in Google.

Relays are no exception. It appears as a standard switch, under the same name as indicated in Tuya, but if necessary, it can be changed, as well as the location. Switching on and off is available here, including with the help of a voice assistant.

Relay operation

This section shows the operation of the relay, which physically cannot be shown in photographs.

Link to the timecode of tests of the video version of the review

The electromagnetic relay clicks quite loudly during operation.

Let’s connect the load – an incandescent light bulb. Zero – common, supplied directly, and the phase is connected to the L1 output on the relay. Remember to observe the phase-zero connection, this is, first of all, your safety.

The speed of work through the Tuya Smart application is instant. It is worth noting that I have a gateway with Ethernet

The work of automation, since the relay and the switch on the same gateway – the operating mode is local. Delays are minimal.

Link to the timecode of tests of the video version of the review

We connect an external switch – one contact to the incoming phase, the other to the S1 contact. Let me remind you that it is also used to reset the relay, and this is convenient – after all, the relay does not need direct access, but it can be hidden in the wall. If it is necessary to reconnect, turn it on / off quickly 5 times, after which the relay will start beeping.

The switch and the app work in parallel. In fact, it does not have an on or off position – it toggles the state. The relay has no operating mode with a return switch. The relay remembers its state. If it was on, it will turn on after power is applied. And vice versa – if it is off, it will remain off.

Link to the timecode of tests of the video version of the review


The relay is supported in zigbee2mqtt integration. We turn on the connection mode, the pairing mode must be activated on the relay, that is, it should beep.

Within about a minute – the relay goes through the interview, stops beeping and connects to the system.

Support – complete, including the corresponding picture. The relay is a router for other devices, and with Zigbee 3.0 support

On the Exposes tab, there are two entities, a switch and a signal quality level. Actually, the relay cannot do anything else, the state memory is at the firmware level and does not change.

The same entities, in the form of a switch and a sensor, are forwarded to Home Assistant through the mqtt integration and can be used in any automation both as a trigger and as a condition and as an action.

SLS Gateway

Full support for relays on the SLS gateway – available on firmware no earlier than April 20, 2021. If you have an earlier installed one, then you need to manually change the converter id to 9th.

The connection mode is standard, the relay beeps until the interview takes place. On fresh firmware – full support, including the current picture.

After that, the device is added to the general list and is available for control, including with the help of internal scripts of the SLS gateway.

Extended information on the Info tab. Let me remind you that the relay acts as a zigbee 3.0 router, increasing both the coverage and the capacity of the network.

There is one parameter more than in z2m – this is lastseen, the time of the last response from a relay in Unix format is the number of seconds since 00:00 on January 1, 1970.

Relay on the network map. He has a blue router connection. The transfer of other devices to it will occur automatically.

Three entities are thrown into the Home Assistant, including the lastseen sensor – which can be used as an indicator that the device is alive.


As I said, this relay is an exact copy of Lonsonho, except that a beeper is installed in it, and not an LED. By the way, in combination with resetting to pairing mode using an external switch, it makes it easy and simple to reconnect a relay mounted inside a wall without direct access to it.

But in comparison with the analog from Moes – these relays lose in that it has the ability to adjust the operating mode after the power is restored and there is a dry contact.

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