Building an infrared sensor is not rocket science; the critical factor is a high-precision manufacturing process and calibration. And calibration again.
We have many customers that buy the Sensor Core and successfully install it onto their own board. But when something goes wrong, there are many factors to consider.
When you order a Sensor onBoard from us, the warranties are extended and the risk on your behalf is minimised.
When we design and manufacture, we are the only ones responsible, and, most importantly, the calibration and the tests are performed after the board is manufactured (did we mention that before?).