| Item Description | Level controller 3-POSITION stepping, 3-ELEMENT control, 4-20MA output, min- / max-alarm with operating unit urb 50 4-20MA AUSGANG, max-/min-alarm mit bediengerät urb 50 / level controller type NRR 2-52 GESTRA spectormodule touch 3-POSITION stepping pi controller with min and max alarm. Output: 2 volt-free change-over contacts for min-, max alarm 1 volt-free relay contact for valve open / stop / closed incl. 1 separate operating & display unit type urb 50 with colour touch panel 1 actual value output 4-20 MA 3-ELEMENT control supply voltage: 24 V DC, 13 W |