"Safety light curtain with no 3rd box or controller. Pylons are rated Nema 4 (IP 65) and has two monitored solid state PNP outputs. Mechanical captive contact (dry) safety relays also available. Input power is 24VDC. Complete system diagnostics, mounting brackets and connection cables are supplied standard. Type 4 \/ Category 4. Made in USA.","The Model SS protects an area by projecting a curtain of infrared light. The infrared emitters and receivers face each other across the field to be protected. Each emitter\/receiver pair is spaced along the length of the pylons at regular intervals from .5, up to 8 depending on the application. The smaller spacing are for finger guarding, the larger spacing are for body protection.","The emitter\/receiver pairs are scanned sequentially (one at a time) by a very short pulse of infrared light starting from bottom (cable end), and working up to the top, until every beam pair has been scanned. Two 16 bit computers in the emitter pylon and two 16 bit computers in the receiver pylon control the operation, as well as cross check each pylon."

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