| Item Description | Level controller continuous, min-, max-alarm / level controller NRR 2-51 connecting level electrode, level transmitter (switch-selectable): 1 input for level electrode NRG 21-../NRG 26-21 or 1 analogue input 4-20 MA, e. G. For level transmitter NRGT 26-1. Outputs: 1 current output 4-20MA for actuating the valve 1 volt-free change-over contact for min or max alarm de-energizing delay: 3 seconds indicators and adjusters: 1 rotary button with integrated pushbutton "test" for simulating min-, max alarm and setting the parameter, 1 seven-segment LED display, four digits, green 2 leds red for min-, max alarm, 1 four-pole code switch for configuration settings supply voltage: 24 VDC, + / -20 %, 0.1 A |