(The encoder type IRC310 w ith a LED diode as the light source, w ith external shaft dia. 10 mm, supply voltage + 10 to + 30 V, outlet push-pull, output signals 2 basic signals w ith 1 zero impulse and their negation, number of impulse per rotation 500, w ith one zero impulse per rotation, version KA-w ith axial connector type CONTACT)