Transmitter, Conductivity/Resistivity, Auto/Fixed, 100-240VAC (+/-10%), 50/60 Hz, 4W, -30C to +130C, Lg. LCM w/Auto-SB+Text Mode Display, Wall/Pipe/Panel Mount, 96x96x132mm, 1/4DIN, w/2x Panel Mounting Clips, 1x Precision Driver