alarm for inside door

[keefjoon]

hi
new to caravaning
i have 2 young children and we are trying for find a suitable device to alert us if they open the caravan door from the inside we have a bailey ranger gt60
can anyone suggest a good device
thanks

 

[Damian]

This may be what will do:

https://www.amazon.co.uk/Wireless-Sensor-BITIWEND-Operating-Receiver/dp/B07WMNKGCP/ref=asc_df_B07WMNKGCP?tag=bingshoppinga-21&linkCode=df0&hvadid=79989563292500&hvnetw=o&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=&hvtargid=pla-4583589108498423&psc=1

 

[keefjoon]

thank you will have a look