Kitchen pantry sensor lighting

[Jothetaxi]

We would like to add an LED lighting strip in a corner profile to the underside of the lower shelf (against the back).  I bought a Luxomat PD9-1C-92902 sensor to link up for the lighting.  The builders electrician did not complete the job and a new electrician has stepped in.  Had a conversation with him about the placement of the sensor, which would preferably at the top underside of the unit, towards to the back edge.  We have concerns that it may:

1) not detect movement if too far back or

2) would the sensor detect people through the gaps in the doors when they are closed and turn on and off.

 

Has anyone used one of these in similar situation? 

 

I looked at the switches that link to the doors but they wouldn't work as there are two pantry doors and it gets complicated to link up the two.

 

Does anyone have any other ideas?  sadly it is a retrofit now.  Not a serious issue but would be good to have light here during the darker winter months.

Thanks.

[Nickfromwales]

Reed switches would work nicely, with the magnets rebated into the tops of the doors and the reed switches into the heads, just off centre of each side of the middle of the opening. 
 

https://uk.rs-online.com/web/p/magnetic-proximity-switches/5308927
 

Will need to switch the lighting via a small relay as these can only do 0.5a max, but these can be completely hidden and work for the double door arrangement.