Photoelectric relay intended for areas classified with the presence of flammable vapors and gases, its operation is switched according to the variation of the incident light. The photoelectric relay has a great differential. In addition to its modern and effective design, its electronic circuit was dimensioned with a protection system against transient flashes. Can be installed in Zone 1 (including explosion-proof), Zone 2, Zone 21 and Zone 22 luminaires and enclosures, for groups IIA, IIB, IIC, IIIA, IIIB and IIIC. Application temperature, withstands variation from -40°C to 70°C. Certified according to Inmetro (Brazil). The connection is made through the 3/8" BSP thread.