I am interested in the compressor, but have too little (technical) details of the product.The following questions:- Dimensions?- Pressure switch adjustable between 3.5 bar (on) and 5bar (off)?- Reliable? (4 liters per minute, 20 hours per week for 4 years)- Ambient temperature for the compressor 40-50 degrees celcius- Available with smaller air reservoir?- Do you have a (acad) drawing? I want the compressor build in- Price per piece- Price per 10 pieces- Price per 25 pieces- Delivery time?