Cabling practice under LOXONE and opinion of the proposed solutions

Hello everyone!
I've built a 120m2 house and I'm going to start slowly in the spring with laying the wiring for the future Loxone automation system, and so I have a few questions about the system itself and the installation practice. Due to my lack of connection to the electrical profession I will be laying it with an electrician friend after hours, while the Loxone logic itself will be done by the system integrator and of course I could direct these questions to him or directly to Loxone support, which I have done, but everyone has a different solution that they recommend. I would be very grateful for tips on installation under Loxone - what and how is used more often. The following questions.
1) Due to cost saving I would not install Touchy everywhere and I want to use conventional bell buttons for switching lights - should I run a separate UTP cable to each button or should I do it as suggested on the Loxone hotline, i.e. 1 strand of twisted pair for power supply and 7 returns to the same number of buttons. Similarly, it was suggested that a twisted pair be run to Touchy, using 2 for power and 2 for the bus, and then the remaining twisted pair wires be used to run UTP to the 4 buttons (4 remaining wires). On the other hand, one of the integrators recommended using UTP for 3 buttons, i.e. 1 pair for the power supply and the other 3 for the buttons. On the other hand, the other integrator I contacted suggested running an OMY 2x1mm2 or budget YTDY 6x0.5 cable to each pushbutton, arguing for a voltage drop. Honestly, I am now in a conundrum as to what to use?

2. what cable to run to the external temperature sensor (I do not want a Loxone sensor because it costs more than 500), I mean rather some 0-10V transmitter - OMY 3-4x1.5 mm2 or UTPa?

3. central switching off - I know that Loxone has the ability to switch off all connected circuits according to the action set, e.g. at the exit after activating the alarm or from the application level. I wanted to know how do you think about using one of the relay outputs to control the coil of the contactor so that when you leave for work or go on holiday, the coil is de-energised to turn off all sockets (power circuits), except, of course, the refrigerator, Loxone power supply system backup, UPS/Aku?

4. frankly speaking I do not like the style of Loxone video intercom (intercom numeric keypad). I'm also afraid that it looks too delicate and illuminates, which may cause someone to want to play with it. Do you have any proven video intercom system that can be easily integrated with Loxone in addition will be compatible with the internal LCD monitor to be used as a home control centre and remote video call zaplikacji e.g. courier opening the gate and gate.

5 I want to resign from the Satel control panel. Its function is to be taken over by the Loxone system, and in addition the motion detectors in the house placed optimally in the house are also to be responsible for switching on the lighting inside the house at appropriate times of the day. Is this a good solution? In this case, how to solve the lack of a Satel keypad at the exit in the vestibule and e.g. in the garage - is it possible to find something without major costs for e.g. a very expensive Loxone numeric keypad?

6) What models of IP cameras do you have that are proven to work with Loxone - I would like to have remote viewing.
7) I am planning underfloor heating on the ground floor and radiators on the first floor - in the case of a loop of the floor I would like to control Actuators in the manifold - should I use 230V on/off actuators or linear flow actuators (if I can find them)? Is it worth installing such an actuator on the floor manifold for radiators also centrally controlled via the thermostat on the first floor?

I would be grateful for any hints or suggestions as to what to consider or apply in order to get the most out of the system. Best regards

Generally it is most questions to the installer who will do it - then you may hear that it is not possible, or it will be much more expensive, that tzreba kabel wymienić, etc....
I wonder why you want to install Loxone and limit it with savings? If you plan to make changes later it is worth designing and wiring for them now.
Re 3. You can program this as a scene provided there is provision to control these circuits. You could also theoretically use a contactor, but you would have to place it in the switchgear before the circuit protectors and make the appropriate circuit division. A good electrician can handle this if you specify the functionality.
Re 5: I would not give up on the alarm. Doing it on Loxone may be more expensive than Satel with integration.

roletaPV wrote:

I want to dispense with the Satel control panel. Its function is to be taken over by the Loxone system, and in addition the motion detectors in the house, placed optimally in the house, are also to be responsible for switching the lighting inside the house at appropriate times of the day. Is this a good solution ?

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What does your insurer's T&C say about this? Any company will accept any automation as an alarm system? Who will then shine their eyes at withholding the claim? This is where I would advise you to consult the language beforehand....
Setting optimal sensors to light up the lights is very often a hopeless setup in the sense of an SSWiN.
For me it is a bit of wiping out the known with the known.
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