General Accessories Mounting Material Types FRS, HF, SM, FMD, PL Front mounting bezel type FRS 2 Material Glassfilled Noryl SE1 For front panel mounting of S-housing timers. Front mounting Colour Light grey bezel and S-housing snap together. Panel cutout 84 x 38 mm FRS 2 FRS 2 on a relay Hold down spring type HF Material Stainless steel spring wire For additional fixing of Scantimer- and S-housings in places with strong vibrations. HF To be used with socket type S 411 or D 411 B. HF mounted on relay Mounting rack type SM 13 Material 1.5 mm electroplated iron Mounting rack for 27 relays (S 108 and S 111). Length, standard 970 mm SM 13 Specifications are subject to change without notice (10.12.02) 1FRS, HF, SM, FMD, PL Mounting Material (cont.) DIN-rail type FMD 411 Material Electroplated steel Mounting rail for socket type D 411 B, which is snapped on Dimensions 35 x 35 mm FMD 411. For surface fixing by means of two screws. FMD 411 Potentiometer lock, types PL 1, PL 2, PL 3 Material Transparent polycarbonate For locking of potentiometer on Scantimer and S-housing timer. The potentiometer lock snaps to front of housing. Fitting poten- tiometer into the aperture of the lock secures the time set on knob-adjustable timers. PL 1, PL 2, PL 3 PL 1 PL 2 PL 3 PL 1 PL 1 For timers with 13 mm knobs. PL 2 For timers with 8 mm knobs. PL 3 For timers with 8 mm knobs. 2 Specifications are subject to change without notice (10.12.02)