However, it does not cover everything from that location, so I am considering purchasing additional sensors.
Does anyone have experience with this type of floor plan? I would appreciate tips and ideas on how to best install the sensors.
And whether one is sufficient or if I need several.
Personally I would go with 2 maybe 3 (depending on the length of your diner/kitchen).
One positioned in the lounge to cover that area and one on the dining area wall facing the kitchen. If the length of the kitchen/diner is too long then consider one on the kitchen wall facing the dining area as long as it’s not too close to any heat sources (cooker, microwave etc)