FIELD: electrical engineering; lining supports of subsurface cleared face. SUBSTANCE: control members are proposed to be integrated in several changeable modules installed in casing where they are plugged in to afford electrical connections. Control keys of keyboard and/or display unit may be integrated in single control module that may be dismounted from casing while control circuit proper of proposed device remains in casing so that lining support could function during module replacement thereby dispensing with dismounting of device as a whole. EFFECT: enhanced operating reliability of device. 12 cl, 3 dwg
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