9 Before taking the instrument housing out, one must turn the supply off.The removal of the instrument housing during the guaranteecontract period may cause its cancellation.Fig. 2. Overall and mounting dimensions4. INSTALLATION4.1. Module fixingThe module is designed to be fixed on a 35 mm rail (EN 60715). The modulehousing is made of a self-extinguishing plastic.Housing overall dimensions: 22.5 x 120 x 100 mm. One should connect externalwires with a cross-section of 2.5 mm2 (from supply side) and of 1.5 mm2 (frominput signal side).