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Communication protocol

The Genius Hub system uses both Z-Wave & Zigbee wireless mesh networks protocol to 'talk' to the devices that are placed around your property.  

A mesh network is one that is robust as it can use 'listening' devices (i.e. devices that are always powered on) to relay messages around the network. The listening devices essentially act as signal boosters.

The more listening devices that are present on the network, the 'stronger' and more resilient it becomes. If one listening device gets switched off, then an alternative nearby device can be used to relay messages instead.

In a perfect world with line of sight the range for Zigbee and Z-wave Wave is about the same and is 100 metres. Inside a building, this reduces to around 30 metres. Solid walls do reduce the strength of the signal but the signal can be boosted in larger properties with the use of Genius Smart Plugs.

There are two types of 'listening devices'. It is important to remember that it is only the Smart Plugs (Dual Band) (PH-PLG-E) that boost the signal for the wireless valves (DA-WRV-E). These vales do not have the signal boosted by any of the other mains powered devices. See this article about the different devices and how they communicate. For each Smart Plugs (Dual Band) you have on a system you will see two devices in the devices list, one is the Z-wave Wave side of the Smart Plug (which is also used to control it) and the other is the Zigbee side of the Smart Plug (which is only used for signal boosting).

On very large systems that have many listening devices the hub does dial back how often it communicates with the listening devices to reduce the network traffic, but you can expect that on most systems the Genius Hub will communicate regularly with a listening device within a couple minutes and a number of seconds when needing to send commands. 

Z-Wave Devices - View the list of neighbours for a device

All mains powered devices act as signal repeaters, the battery powered devices communicate through these to reach the Genius Hub.

When one device can see another device it is called a neighbour and it can be either other mains powered devices, or battery powered devices. Each mains powered device can be queried for a list of the other Z-Wave devices it can see in direct range. To do this:

1. On the app, go to the Main Menu, Settings and then Devices
2. Scroll down to the relevant mains powered device
3. Tap on the 3 dots and select 'Update Neighbours'
4. Wait for a couple of minutes
5. Go back to the device row and tap on the device to expand the row

6. The 'Device Neighbours' will be displayed for this device
   

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   If a device has only 1 or 2 mains powered neighbours, this can mean there are few routes back to the Genius Hub and so small changes in the environment such as moving furniture can cause the device to communicate unreliably. On smaller systems, there may only be 1 or 2 other mains powered devices and so the neighbours list will be shorter. However on larger systems, there should be at least 3 mains powered neighbours and a small neighbours list is indicative of poor signal in the area of the property surrounding that device.

   
   

Zigbee Devices - View the Signal Strength

The Wireless Radiator Valve (DA-WRV-E) (see here for the differences between Wireless Valves) can be queried for their signal strength between them and the nearest signal repeater. It is also possible to query the signal strength to the Smart Plug (Dual Band) (see here for the differences between Smart Plugs) To check the signal strength:

1. On the app, go to the Main Menu, Settings and then Devices
2. Scroll down to the relevant Wireless Radiator Valve
3. Tap on the 3 dots and select 'Signal Strength'
4. Wait for a couple of minutes
5. Go back to the device row and tap on the device to expand the row

6. The Signal Strength will be displayed for this device
   

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   If a device has a signal strength of < 30%, a nearby Smart Plug (Dual-Band) will need to be moved closer to it, or a new Smart Plug will need to be added to the network, as it will lead to poor response times from the Wireless Radiator Valve and reduced battery life. Zigbee is different to Z-waveWave. For Zigbee you can query the signal strength of all of the devices (mains powered and battery powered), whereas with Z-wave Wave you can only know the neighbours of the mains powered devices not the signal strength to these neighbours.

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