Single-beam photo-electric safety switch type 4 - through-beam mode - receiver alone - PLe SIL3 SILCL3 Cat4 - axial connection - SICK (L41) - Type L41E-21MA1A - 0m-10m sensing distance - Red light (660nm wavelength) - Supply voltage 24Vdc - Pre-equipped with 4-pin M12 (male) straight connector - Nickel-plated brass (housing) / Plastic PMMA (optics material) - IP67 - Cylindrical threaded / barrel shape - M18 threaded housing