We can definitely send you the schematics... please direct your request by e-mail to email@example.com
You can certainly purchase just the sensor; we have recently made them available on our webstore at:http://store.bitalino.com/index.php/standard-account-store#!/Sensors/c/11569758/offset=0&sort=normal
Regarding the time, currently we have sensors in stock and ready to ship immediately.
If you choose standard shipping, the parcel can take up to 15 business days to arrive (usually takes less).
After completing your order, you can also request an upgrade to courier over e-mail (takes up to 5 business days).
The BITalino Team