| Similarity | Rank | |
|---|---|---|
| RF | 0.789 | 17277 |
| infra-red | 0.747 | 68775 |
| infrared | 0.732 | 14360 |
| NIR | 0.726 | 90012 |
| Infrared | 0.719 | 34482 |
| Sensor | 0.705 | 32189 |
| sensor | 0.702 | 7125 |
| PIR | 0.688 | 77509 |
| DSC | 0.687 | 53919 |
| imager | 0.682 | 87394 |
| optical | 0.679 | 8261 |
| CCD | 0.673 | 34145 |
| PAR | 0.671 | 64414 |
| optics | 0.669 | 21287 |
| CMOS | 0.663 | 37263 |
| Sensors | 0.663 | 45973 |
| LED's | 0.662 | 71808 |
| sensors | 0.662 | 8505 |
| TTL | 0.659 | 55679 |
| Transmitter | 0.656 | 71460 |
| Diode | 0.656 | 86694 |
| CRT | 0.655 | 34661 |
| ADC | 0.654 | 40379 |
| RADAR | 0.651 | 96523 |
| IC | 0.650 | 18313 |