Security Alarms and Fire Systems - Security Systems Accessories - OPTEA WSA box
|OPTEA WSA Box control .
box manage 4 infra-red beams, 4 transmitters and 4 receivers. Beam are multiplexed and sincronized, to avoid interferences between them. The intervent time it is adjustable by a trimmer and the turn-on time it is fixed at o.5 second. The output contact can be normally closed or opened and the tamper contact is normally closed. Every beam can be adjiusted along the height of the bar and fixed by a little screw.
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