HDL-MHS51.231 51 Zone Dry Contact Module 51 Zone Dry Contact Module, DIN-Rail Mount, 51CH input/ output dry contact, Parameters Model HDL-MHS51.231 SKU 622061 Bus Power 280 mA Width 72 mm Height 90 mm Depth 66 mm Weight 387 g Material CustomOne CustomTwo CustomThree CustomFour CustomFive Discount category A Price category 5.29-1 Out of stock in stock Out of stock You can buy these goods through registered HDL partner. Question to product Related Documents HDL-MHS51-231-51CH-Dry-Contact-Module M_Dry_contacts_Description_of_switch_types