The Slimline Bi-Directional Photobeam – FA31
FA31 is a single relay infrared photobeam working from 12V or 24V ac/dc. The slim body ensures the beam can be placed at the very edge of the opening. The circuit boards inside can be set for -90° or 0° or +90° angle.
The Slimline Bi-Directional Photobeam (BATTERY VERSION) – FA33
FA33 is a single relay IR photobeam. Transmitters may run on battery (CR123A 3V 1.4-1.6uA) or 12Vdc, but not both! Receivers need external power. Transmitters have power settings for 5m or 10m range. The battery’s life depends on power setting. The slim body ensures the beam can be placed at the very edge of the opening. The PCB can be set at 0° or 90° angle.