Author Topic: GW1100 sending UDP broadcast packets non stop  (Read 1182 times)

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Offline kheller2

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GW1100 sending UDP broadcast packets non stop
« on: December 14, 2021, 06:54:33 PM »
Maybe this was covered before, but i noticed today that I can't login to my GW1100B_V2.0.7 device via the web portal.  It keeps saying that the password can't be blank.  (It isn't, I've tried several computers).  But I also noticed every second its broadcasting to my entire network!


18:53:14.703231 IP 172.31.255.112.59089 > 172.31.255.255.59387: UDP, length 42
   0x0000:  4500 0046 0c38 0000 ff11 57bf ac1f ff70  E..F.8....W....p
   0x0010:  ac1f ffff e6d1 e7fb 0032 a6dd ffff 1200  .........2......
   0x0020:  [DELETED FOR SECURITY]
   0x0030:  3131 3030 422d 5749 4649 4631 3142 2056  1100B-WIFIF11B.V
   0x0040:  322e 302e 37aa                           2.0.7.


Anyone see this before?  I'll have to factory reset it if i can't figure a way in.  The app works fine accessing it, but you can't change any web settings with that.

Update:  Well the wsview PLUS app lets me change the password, so now I'm in.  And the firmware is upgraded to 2.0.8, but still the broadcast messages every second.
Update Update:  Seems the GW1000 sends broadcast packets every 2 seconds.  But the GW1100 does it multiple times a second, 3-5 packets minimum.  Unless I'm seeing a network echo but the src is always the same.

« Last Edit: December 15, 2021, 08:00:20 AM by kheller2 »
Ambient Consoles: WS-2000, WS-1900, WS-1200, WS-2902C, WS-3000-X3, WS-0900-IP(observerIP), WS-1001-WIFI
Ambient Arrays: WH65B
Ambient Sensors: WH31E(3), WH31B(2), WH32B, WH31SM(2), WH31PGW, AQIN, WH31LA(3)
Ambient Spares: WH24B(2), WH25B.
Ecowitt: HP2551BU, GW1000B(dead), GW1100B(2), GW2000B
Ecowitt Sensors: WH51, WN34BL, WN34(2), WH31, WH41, WH40

Offline broadstairs

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #1 on: December 15, 2021, 03:09:01 AM »
I wonder if this is because you still have the wifi access point in the GW1100 still enabled? There is an option to disable it in the settings once the device is connected to your lan.

Stuart
Ecowitt GW1003 with ultrasonic wind gauge, lightning sensor and PM2.5 sensor with Personal Weather Tablet as a console.

Offline Gyvate

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #2 on: December 15, 2021, 06:31:53 AM »
when the GW1100 is first started (or after a factory reset), it provides a local WLAN ("WiFi") with the SSID formed from its name and the last 4 characters of its MAC address: e.g. GW1100A-WIFIxxxx where x is a hexadecimal number between 0 - F.
In your case it's GW1100B-WIFIF11B (GW1100B = GW1100 at 915 MHz [B=915]) + F11B being the last four bytes of its MAC address.
That's how it can also be seen in the Device List in WS View (Plus), provided the pairing process with the LAN router is completed.

The UDP broadcast makes the WiFi network (its SSID) visible and identifiable and accessible. During the pairing you connect to that network (via the web UI), transfer the SSID and password of your router to the GW1100 which then connects to your router and receives its IP address in your LAN. The pairing completed the GW1100 network is no longer needed.

This "configuration WLAN" with the SSID GW1100n-WIFIxxxx remains active. Since firmware 2.0.5 or 6 the "configuration WLAN" can be switched off in the GW1100 Web UI. It's considered to be a potential security risk if you leave it on.

Then, as @broadstairs mentioned before, your UDP broadcasts should disappear.
« Last Edit: December 15, 2021, 06:35:42 AM by Gyvate »
WS2350 1.6.7, GW1000(3) 1.7.7,WH2650 WiFi (2) 1.7.7 (test/backup), GW1100 2.3.1, GW2000(3) 3.1.1, HP2551 1.9.5,5.1.5;HP3500 1.7.2,WS3800 1.2.8, WN1910 1.2.3,WN1980 1.2.3;
Ecowitt WS90(2)1.3.5/1.4.0, WS80(2)1.2.5, WS68, WS69, WH40, WH31, WH31-EP, WN30, WN34L, WN35, WH32, WH32-EP, WH32B, WH57 [Lightning], WH41 [PM2.5], WH51, WH45, WH55
MeteobridgePro(2)[test,prod] 5.8 Mar 01 2024, 15185 - Blake-Larsen Sun Recorder - RPi4/weewx 4.8.0/4.10.2/CumulusMX 3283/Meteobridge RPi4B-2GB(3169)
Barani Meteoshield Pro, MetSpec Rad02 - Ecowitt 5763,34418;WU ISAARB3(WH4000SE),ISAARB22(HP2553), http://meshka.eu

Offline kheller2

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #3 on: December 15, 2021, 07:56:30 AM »
Well, okay.  But I do have it set to turn off the radio after 5 minutes.

Here is what is going on this morning, all in 1 second:
07:53:44.061908 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.161842 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.261914 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.361904 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.461988 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.562022 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.661930 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.762030 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.862318 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42
07:53:44.962237 IP 172.31.255.112.51223 > 172.31.255.255.59387: UDP, length 42

Inside the packet, one of the bytes is counting down and another is counting up.  Interesting.

Can someone else confirm their network is not doing this?
Ambient Consoles: WS-2000, WS-1900, WS-1200, WS-2902C, WS-3000-X3, WS-0900-IP(observerIP), WS-1001-WIFI
Ambient Arrays: WH65B
Ambient Sensors: WH31E(3), WH31B(2), WH32B, WH31SM(2), WH31PGW, AQIN, WH31LA(3)
Ambient Spares: WH24B(2), WH25B.
Ecowitt: HP2551BU, GW1000B(dead), GW1100B(2), GW2000B
Ecowitt Sensors: WH51, WN34BL, WN34(2), WH31, WH41, WH40

Offline olicat

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #4 on: December 15, 2021, 03:53:58 PM »
Hi!

Quote
Can someone else confirm their network is not doing this?
Confirmed from the other side!
Also here a UDP broadcast with 10pps (packets per second) from GW1100 at v2.0.8.
Internal WIFI AP is switched off.

The GW1000's and the HP3501C and the HP2551C just send this UDP packet every 2 seconds.
So I guess this is a bug of the GW1100's firmware.

Interesting: the GW1100 sends directed to my class C only - all other devices do a limited broadcast to 255.255.255.255.

With v2.0.3 the GW1100 shot a UDP packet every 3 seconds.
With v2.0.7 it was already stormy.

Oliver

Offline Rover1822

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #5 on: December 15, 2021, 04:26:22 PM »
Hi!

Quote
Can someone else confirm their network is not doing this?
Confirmed from the other side!
Also here a UDP broadcast with 10pps (packets per second) from GW1100 at v2.0.8.
Internal WIFI AP is switched off.

The GW1000's and the HP3501C and the HP2551C just send this UDP packet every 2 seconds.
So I guess this is a bug of the GW1100's firmware.

Interesting: the GW1100 sends directed to my class C only - all other devices do a limited broadcast to 255.255.255.255.

With v2.0.3 the GW1100 shot a UDP packet every 3 seconds.
With v2.0.7 it was already stormy.

Oliver

Any chance this is a form of "I'm here" , beacon for use by the apps?
Ambient:
  WS-2000
  PM 2.5(2)
  WH31B(2)
  WH40E
  WH31P
EcoWitt:
  GW1100
  GW1000(4)
  WH31(2)
  WH57
  WH51(12),
  WH40
  WH5360B
  WN34S
  WittBoy WS90 + GW2000
  WS90 (other one) + GW1100
Personal Sites: Weather Cam

Offline olicat

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #6 on: December 15, 2021, 04:51:46 PM »
Hi!

Quote
Any chance this is a form of "I'm here" , beacon for use by the apps?
It looks like it, yes. After all, the ip address, the MAC address, the command port, the name and the firmware version are in in the packet.
But I wouldn't program it like that.
Especially since the apps use a different mechanism - they ask for feedback from all stations in the network via UDP broadcast.
In this way, data traffic only takes place when it is really needed. 10 packages per second 24 hours a day for a POSSIBLE contact is extremely ineffective.
I don't know what these UDP packets are supposed to do. Or for which app/mechanism.
But as written, the other stations do the same - just not with this frequency.

Oliver

Offline Rover1822

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #7 on: December 15, 2021, 05:04:18 PM »
I will be the last to defend their practices, but I have other devices that do something similar. In reality, with the size, and modern routers, the impact is small, annoying, but small.
Ambient:
  WS-2000
  PM 2.5(2)
  WH31B(2)
  WH40E
  WH31P
EcoWitt:
  GW1100
  GW1000(4)
  WH31(2)
  WH57
  WH51(12),
  WH40
  WH5360B
  WN34S
  WittBoy WS90 + GW2000
  WS90 (other one) + GW1100
Personal Sites: Weather Cam

Offline kheller2

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #8 on: December 15, 2021, 06:06:37 PM »
Now now.  Let’s not accept bad coding practices. If I were to plug this in at my office my port would be shutdown.   Every device on a network receiving these packets (10 or more a second) is poor let alone every switch port and upstream switch pushing it out. 

If the old code did it every 2 seconds no need for the new to be worse.  But yes it probably has to do with how the apps detect devices in the net.  And since I have at least four I noticed.  I was curious why the network switch under my tv was blinking crazy as if it were streaming.

Time to open a big report.
Ambient Consoles: WS-2000, WS-1900, WS-1200, WS-2902C, WS-3000-X3, WS-0900-IP(observerIP), WS-1001-WIFI
Ambient Arrays: WH65B
Ambient Sensors: WH31E(3), WH31B(2), WH32B, WH31SM(2), WH31PGW, AQIN, WH31LA(3)
Ambient Spares: WH24B(2), WH25B.
Ecowitt: HP2551BU, GW1000B(dead), GW1100B(2), GW2000B
Ecowitt Sensors: WH51, WN34BL, WN34(2), WH31, WH41, WH40

Offline mcrossley

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #9 on: December 15, 2021, 06:10:48 PM »
Those are the device discovery packets. They were only supposed to be sent for a short period after the gateway received a discovery request broadcast message. But so far the gateways have broadcast them every 2 seconds whether a request was sent out not.

Sending 10 per second is an error methinks.
Mark

Offline WA4OPQ

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #10 on: December 15, 2021, 09:52:18 PM »
  I was curious why the network switch under my tv was blinking crazy as if it were streaming.

I had noticed this also on the switch on my desk. I hadn't yet made the time to sequentially cut everything to find the culprit. After reading this I briefly disconnected the GW1100 and the 16 LEDs stopped flashing.
So now I'm patiently waiting for a firmware update.

Offline olicat

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #11 on: December 16, 2021, 02:03:53 AM »
Hi!

Quote
So now I'm patiently waiting for a firmware update.
But first someone should report this suspected bug to Ecowitt ...

Addendum:
I got over it and asked Ecowitt for clarification ...

Oliver

Offline olicat

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #12 on: December 16, 2021, 04:47:54 AM »
Hi!

I have never received a response from Ecowitt so quickly before. It was kind of like in a chat ...
Quote
This problem has been under our awareness. we are releasing an firmware upgrade to fix this problem.

Hopefully it wasn't just a coincidence but a new communication strategy.
Although I did not get an answer to my basic question about what these packages are for at all.

Oliver

Offline mcrossley

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #13 on: December 16, 2021, 07:06:49 AM »
Although I did not get an answer to my basic question about what these packages are for at all.

So my post above.
Mark

Offline olicat

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #14 on: December 16, 2021, 07:46:34 AM »
Hi!

Quote
So my post above.
However, this explanation is not entirely accurate, or at least not (yet) acceptable to me.
(This is not meant as a reproach to you!)
If these packets came in response to a command from an app, the sending of these packets should stop a short time after this request by the app. If this does not happen, it is a firmware error which have to be fixed.
But these packets obviously are sent by all devices available to me every 2 seconds - regardless of whether there is a request by an app (as far as I can see) or not.
After all, Ecowitt has now written that sending 10 packages per second is really a firmware bug - which will be fixed.

But I have no explanation for the existence of these packages at all.
Because the request by the app takes place via command 0x12 - the response from the weather station takes place on port 46000 this way.
The packets available here are all sent from the weather station to destination port 59387.

So I wanted to know from Ecowitt what these packages are actually used for.
Maybe there is some (old?) software (app) that only knows this way, which is why it was left that way for reasons of compatibility?
If so, I accept that too. But I would like to question that.

Oliver

Offline mcrossley

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #15 on: December 16, 2021, 08:33:29 AM »
I have always made the cmd 0x12 requests on port 46000 and expected the responses on on port 59387, nothing has changed there from day one?
Mark

Offline olicat

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #16 on: December 16, 2021, 08:39:19 AM »
Hi Mark,

Quote
I have always made the cmd 0x12 requests on port 46000 and expected the responses on on port 59387, nothing has changed there from day one?
this could be the point!
I've aways used the port 46000.
From the documentation:
Quote
When console and APP device are on the same WLAN network, connected to a same router, APP side will send a
command via UDP casting, after this command received, console wifi will reply back its MAC, IP, Port and AP’s SSID to
APP device side. ( port 46000). 
The port 59387 is not mentioned there.

Oliver

Offline mcrossley

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #17 on: December 16, 2021, 08:41:28 AM »
Do you actually see the response on port 46000?

I know is says that in the doc, but I have used the other port since an email exchange with Ecowitt in March 2020.
Mark

Offline olicat

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #18 on: December 16, 2021, 09:01:25 AM »
Hi!

Quote
Do you actually see the response on port 46000?
Yes, that's the way FOSHKplugin searches for stations.

Oliver

Offline kheller2

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #19 on: December 16, 2021, 10:01:04 AM »
I had opened a ticket/sent email to Ecowitt shortly after my post. They responded: "Thanks for your email. Your findings is forwarded to our r&d team, we will fix this to broadcast UDP with once per second in the next upgrade version. "

Granted, this still goes against the documentation that states the console should only respond to app requests instead of constantly sending out data.
Ambient Consoles: WS-2000, WS-1900, WS-1200, WS-2902C, WS-3000-X3, WS-0900-IP(observerIP), WS-1001-WIFI
Ambient Arrays: WH65B
Ambient Sensors: WH31E(3), WH31B(2), WH32B, WH31SM(2), WH31PGW, AQIN, WH31LA(3)
Ambient Spares: WH24B(2), WH25B.
Ecowitt: HP2551BU, GW1000B(dead), GW1100B(2), GW2000B
Ecowitt Sensors: WH51, WN34BL, WN34(2), WH31, WH41, WH40

Offline mcrossley

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #20 on: December 16, 2021, 10:08:42 AM »
Hi!

Quote
Do you actually see the response on port 46000?
Yes, that's the way FOSHKplugin searches for stations.

Oliver

Ha! Sounds like they've got belt and braces, I'll try switching to the documented port myself - just in case they decide to remove the 59387 broadcasts at some point!
Mark

Offline jbroome

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #21 on: December 16, 2021, 01:36:01 PM »
The basic *UNSOLICITED* broadcast to port 59387 began with firmware version 1.5.5 (on the GW1000), where it would broadcast to port 59387 every two seconds.
An example of this is:
 e8 db 84 e1 c9 20 c0 a8 17 7c af c8 10 47 57 31 30 30 30 42 2d 57 49 46 49 43 39 32 30
which I decode to:
 macaddr=e8:db:84:e1:c9:20 ipaddr=192.168.23.124 port=45000 SSID[16]="GW1000B-WIFIC920"

The firmware version was added to the end of the packet data with firmware version 1.6.5.
An example of this is:
 e8 db 84 e6 2b 68 c0 a8 17 1f af c8 17 47 57 31 30 30 30 42 2d 57 49 46 49 32 42 36 38 20 56 31 2e 36 2e 38
which I decode to:
 macaddr=e8:db:84:e6:2b:68 ipaddr=192.168.23.31 port=45000 SSID[23]="GW1000B-WIFI2B68 V1.6.8"

And the GW1100 kept it up too, still every two seconds:
 c4 5b be 6d eb 94 c0 a8 17 59 af c8 17 47 57 31 31 30 30 42 2d 57 49 46 49 45 42 39 34 20 56 32 2e 30 2e 32
which I decode to:
 macaddr=c4:5b:be:6d:eb:94 ipaddr=192.168.23.89 port=45000 SSID[23]="GW1100B-WIFIEB94 V2.0.2"

I haven't upgraded my one GW1100 yet, so I haven't seen the volume of these broadcasts increase yet.
« Last Edit: December 16, 2021, 01:38:32 PM by jbroome »
Collector of Ecowitt and related gizmos:
GW1000 x4 (both 915 MHz and 433 MHz)
GW1100 x2 (both 915 MHz and 433 MHz)
GW2000 (915 MHz)
WH31
WH31P
WH32E
WH32B
WH34BS
WH34BL
WN35
WH40
WH41
WH45
WH51
WH55
WH57
WH65B
WH68
WS90BN
(and probably more that I've forgotten)

Offline jbroome

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #22 on: December 16, 2021, 01:42:55 PM »
The *solicited* broadcast, presumably intended for active device discovery, involves the initiator sending a UDP command to the broadcast address on the local network segment (typically 255.255.255.255, or the local interface's broadcast address [e.g. 192.168.0.255], depending on your operating system), from port 46000 and to port 46000.  Each GW1xxx and similar device that sees the broadcast request will respond to port 46000 on the sender's address, with packets formatted in the same manner as the unsolicited packets I described in the previous comment.
Collector of Ecowitt and related gizmos:
GW1000 x4 (both 915 MHz and 433 MHz)
GW1100 x2 (both 915 MHz and 433 MHz)
GW2000 (915 MHz)
WH31
WH31P
WH32E
WH32B
WH34BS
WH34BL
WN35
WH40
WH41
WH45
WH51
WH55
WH57
WH65B
WH68
WS90BN
(and probably more that I've forgotten)

Offline kheller2

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #23 on: December 20, 2021, 12:01:17 PM »
My Ambient consoles WS-2000 and WS-2902C both at v4.3.2 and Ecowitt GW1000 (v1.6.8) send to port 59387 every 2 seconds.  The GW1100 at 2.0.8 is broadcasting 10 every second.  I'm wondering if that is what keeps taking out the observerIP I have where I have to reboot it so much more of late.  The observerIP seems very susceptible to network fluctuations.

In any case, I await for a firmware update to address this silliness.  Especially since the GW1100 IS at 2.0.8 but shows 2.0.7 in the web console, an yet another browser doesn't show the version at all.  Yeah for coding!


« Last Edit: December 20, 2021, 12:06:28 PM by kheller2 »
Ambient Consoles: WS-2000, WS-1900, WS-1200, WS-2902C, WS-3000-X3, WS-0900-IP(observerIP), WS-1001-WIFI
Ambient Arrays: WH65B
Ambient Sensors: WH31E(3), WH31B(2), WH32B, WH31SM(2), WH31PGW, AQIN, WH31LA(3)
Ambient Spares: WH24B(2), WH25B.
Ecowitt: HP2551BU, GW1000B(dead), GW1100B(2), GW2000B
Ecowitt Sensors: WH51, WN34BL, WN34(2), WH31, WH41, WH40

Offline Gyvate

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Re: GW1100 sending UDP broadcast packets non stop
« Reply #24 on: December 20, 2021, 04:24:44 PM »
mine is on 2.0.8 too - and shows 2.0.8 in the WebUI  8-)
WS2350 1.6.7, GW1000(3) 1.7.7,WH2650 WiFi (2) 1.7.7 (test/backup), GW1100 2.3.1, GW2000(3) 3.1.1, HP2551 1.9.5,5.1.5;HP3500 1.7.2,WS3800 1.2.8, WN1910 1.2.3,WN1980 1.2.3;
Ecowitt WS90(2)1.3.5/1.4.0, WS80(2)1.2.5, WS68, WS69, WH40, WH31, WH31-EP, WN30, WN34L, WN35, WH32, WH32-EP, WH32B, WH57 [Lightning], WH41 [PM2.5], WH51, WH45, WH55
MeteobridgePro(2)[test,prod] 5.8 Mar 01 2024, 15185 - Blake-Larsen Sun Recorder - RPi4/weewx 4.8.0/4.10.2/CumulusMX 3283/Meteobridge RPi4B-2GB(3169)
Barani Meteoshield Pro, MetSpec Rad02 - Ecowitt 5763,34418;WU ISAARB3(WH4000SE),ISAARB22(HP2553), http://meshka.eu