A designer and site builder friend - Twan Elshof, www.twanelshof.nl, visit that site! - came up with it: "Look, that's useful for you kind of people!"
He showed the site he was working on on his smartphone:
"We provide a complete range of GSM alarm detectors. ”
The GSM alarm detectors are plastic boxes that work completely independently. They do their job where you put them. They detect movement, opening doors, burglary. water, smoke set temperatures, also from aquariums with expensive exotic swimmers, and anything and everything.
The basic device monitors your property, wherever you are. The all-in-one alarm system can be used immediately anywhere. Without installation work or complicated programming. A matter of depositing and enabling with your user code. Never before has security been so simple and effective.
The devices offer the user the option of a silent or a loud alarm as soon as intruders are detected. If the device "starts" at a programmed value, it calls and texts one or more phone numbers. Therefore you do not have to miss a report.
That gives a safe feeling and especially in vacation time bonus points to the peace between the ears. And such a device can also be used in (mobile) caravans, hotel rooms or classics during a multi-day tour. Handy!
Twan is still working on the site, but apparently you can already visit www.gsm-alarm-melder.nl