These compact FO splice distributors for TH35 mounting rails are ideal for use in industrial environments. The enclosed front panels allow the. The FIMP-M splice box, compactly sized at 115 x 61 x 113 mm, offers a versatile and efficient solution for fiber optic connectivity. Couplings available for selection include SMA, ST, SC. Splice boxes ensure continuously reliable real-time data transmission. You can find fiber splice boxes and. Take care never to look directly into the light of an optical fiber, even if the light source is invisible to the naked eye.