Diesel heater GSM control

[benchmark]

I have an Eberspächer easy start GSM control in my boat and a mate was very impressed and now will like this function installed on his own boat but he is very put off by the high prices of the branded product.
In our search on the internet we came across this:

http://gsm-start.se/en/webasto-eberspacher/parking-heater-gsm-remote-control

Does anyone on this forum have any personal experience with this alternative from Sweden?

 

[lw395]

I've not seen that product, but a friend of mine has SMS control on Webasto heating.
He built his own, but I understand that there are plenty of SMS controlled switchs, often sold as 'gate openers'.
A couple of hundred quid for the Swedish product looks about right, compared with £50 worth of bits and a lot of DIY.