Takex PB-IN100HFA Synchro-Quad Photobeam pair.
The PB-IN-HF series is the flagship of the range of infrared photoelectric beams.
By synchronizing 16 beam paths between Transmitter and Receiver, the PB-IN-HF series offers unrivalled stability in perimeter security. Coupled with channel separation and environmental (anti-fog) circuitry, the PB-IN-HF series has earned worldwide recognition as the standard our rivals aspire to.