| Scanner blocks for opposed, retro, diffuse, convergent, and fiber optic sensing modes; Most scanner blocks include Banner's exclusive, patented alignment indicating device system, which lights a top-mounted indicator LED whenever the sensor sees its own modulated light source, and pulses the LED at a rate proportional to the strength of the received light signal; Best choice for opposed sensing in extremely dirty environments; Also useable side-by-side for long-distance mechanical convergent sensing; 3 and 4 wire system |
