Control, liquid level Multi-level, stainless steel construction, 1" NPT, SPST/20VA, common return. Measured from bottom of mounting plug, L1 = 10.50" NO, L2 = 5.75" NC, L3 = 4.00" NC,OAL 11.50" 316 stainless steel stem/mounting and float material, DC Micro, style QD, male connector, 4 pin, S.S. retaining rings.