... level meter LLXK-MR series resistance rotary sealing material level controller: Application l metallurgy, chemical industry, petroleum, electricity, food, paper, coal ... AC24V, 110V, 220V, 50/60Hz; DC24V Output Switching signal Out line port M18x1.5 M20x1.5 (explosion-proof) Contact capacity AC220V ... LLXK-M-R series resistance rotary fully sealed material level controller