Wireless Sensor Tags Protect Against Freezer Failure

(Simon) #21

In principle you can mitigate the security risk of opening up that incoming port by setting up the router in such a way that it does not allow the IoT device to communicate with any other LAN devices on any ports. That way, even if an intruder were to able to hack it, they cannot then use it against your LAN clients (it could in principle still be used against WAN clients, think botnet).

Alas, I believe this is something AirPort software does not allow you to do. IIRC you cannot set it to pull up a firewall between one LAN client and all the others. You’d actually have to resort to using two entirely separate LANs where one exists only for the IoT device and the other is your actual AirPort network for your Macs, iOS devices, etc.

(Marc Z) #22

Couldn’t you just put it on your guest network? That way it would be isolated from the rest of your computers, but still connected to the internet. That’s what I do for my smart thermostat.

(Simon) #23

I don’t think you can open up a port for incoming traffic to the guest network. I think Adam’s issue is that basically his IoT device needs to be reachable from the WAN. That requires opening up a port to that device.

(Adam Engst) #24

Indeed. @Simon is right. The Ethernet Tag Manager is on my Ethernet network, and doesn’t do anything via Wi-Fi, so the guest network won’t help here. But using it for IoT devices that do connect via Wi-Fi is a smart security approach. @jcenters—would using the guest network be a good thing to do for your Wyze Cams?

(Al Varnell) #25

The guest network would need to be protected by a strong WPA2 (soon to be 3) password to prevent it being used to spy on your home, which is generally speaking the biggest abuse observed of such devices. That’s good advice for any guest network, of course.


(Paul Chernoff) #26

A 3 router solution might be best. The initial router (often supplied by the Internet carrier) should have Wifi turned off. Then 2 more routers each with Wifi on, one for computers/iOS/smartphones and the other for IoT devices. This is to keep IoT crap separate from your regular network. The reason for this setup is that for many routers the guest network traffic is not kept completely separate from the regular network. There are routers that are good at separating traffic between he different networks they set up and wouldn’t require this 3 router setup.

(Chris Hannon) #27

I was excited about the temperature wireless tag on reading this article and recently bought one of these devices. I subsequently read elsewhere that support is non existent and I have to concur with that. To do anything with this device one needs a serial number yet there is none to be found, not on the device nor on any documentation and to log onto support where I was hoping to ask the question… you need a serial number. So far no response to email and no response to the “chat” on Cao website. Destined for the bin I suspect.

(Adam Engst) #28

I’m surprised and dismayed to hear about your support experience since I’ve had very good support from them—quick email responses and the offer to replace a dead tag even out of warranty. I’ll see if I can get in touch with them.

(Chris Hannon) #29

Hi Adam

Thank you for your quick reply

A quick look at Amazon seems to indicate that I am not alone in my experience

It would wonderful if they could contact me

Kind regards


(Adam Engst) #30

Looks like I don’t have an email address as such, since I used their online ticket system and heard back promptly. Is that what you’re saying needs a serial number?


My original order message says you can also get into it via support@mytaglist.com—it recommends putting your order number in the Subject line.

(Chris Hannon) #31


yes , I need a serial number to create an account to use the app on my iPhone.

I’ll send an email to support@mytaglist.com and see how that goes. The original email I received from them said to sent it to sales@mytaglist.com , no reply to that sent several days ago.



(Adam Engst) #32

I just checked, and there’s a sticker with the serial number on the bottom of my Ethernet Tag Manager (the base station for the sensors).

(Fearghas McKay) #33

I use their outdoor moisture sensors and they just work but it took a while to work out on the website that you needed the base station as well.

It really doesn’t help that you couldn’t order the tags and the base station in the same order, it made it very unintuitive.

Once the packages arrived though deployment was trivial, it would be nice if getting the data out and into other ecosystems was less painful but they have an API and are the only game in town as far as I could see earlier this summer.

My application is for garden irrigation and currently it is mostly being used to check levels manually rather than direct integration into OpenSprinkler, that might happen next year.