Specifications: • Optical range: low frequency (12-25 Hz) in the infrared range • Supply voltage: 7 VDC (supplied by the control) • Operating temperature: -40°C to 50°C (-40°F to 125°F) • Available in NEMA (Class 1, Div 2, Group C and D) and Cenelec approved explosion proof housing (EEx d IIC T6)