Diagram of the connection between the Reduxi Controller and a heat pump. Components: Controller (dark Reduxi box with a green display and an Ethernet port on its front); a router icon with Wi-Fi symbol; Heat pump (outdoor unit with fan and an SG Ready badge at its left); Gateway (Reduxi Gateway box with three blue current sensors attached). Teal lines: Controller to router labelled "Ethernet (Modbus TCP)"; router to Gateway labelled "Ethernet (Modbus TCP)" with the note "Wireless or wired" under the router; Gateway to the SG Ready contacts of the heat pump (line from the Gateway up to the SG Ready badge); a vertical line from the Gateway to the heat pump labelled "L1, L2, L3"; a line from the current sensors to a teal box "Heat pump power supply".

Electrical circuit diagram in German from Ochsner (page 'Digitale Ein- und Ausgänge'), in green, blue and red lines on white. Upper part 'Digital Ausgang' (digital outputs, magenta dashed box -OTE) with pins and loads: Heizen (pin 3, relay -KA1 EVO, contact -K31), Kältekreisumkehr (pin 4, solenoid valve Magnetventil Abtauung -Y3, relay -KA2), WQP Wärmequellenpumpe (pin 5, -KM1 Ventilator), WEP Pufferladepumpe (pin 6, -K12 Schütz, motor -M2), Heizkreis 1 (pin 7, pump -M4, Heizkreispumpe, 'bauseits'), Heizkreis 2 (pin 8, pump -M5, Heizkreispumpe, 'bauseits'); supply rails LS, N, PE at the left and right edges. Lower part: 'Digital Eingang' (digital inputs) and 'Digital Ausgang' with pins 17 to 30: Alarm EEX (pin 17), Motorschutzschalter Ventilator (18), Motorschutzschalter Verdichter (19), Phasenüberwachung (20), Externe Sperre (21), Hochdruck Abschaltung (22), Verdichter (23, 24), Summenstörung (25, 26), Multifunktionsausgang 1 (27, 28), Multifunktionsausgang 2 (29, 30). Terminals -X2 with the labels TK, EVU and HP; the contacts -X2 EVU / EVU between pins 21 and 22 are marked with a red rectangle. Also shown: Hochdruck switch -S3, contactor -KM3 Verdichter, Magnetventil OVI -Y5, Softstart -K31. Note in blue at the bottom: 'Option Klixon nur bei GMLW2Plus und GMLW3Plus' and 'Bei EVU Abschaltung Brücke entfernen' [remove the jumper when switching off via EVU]. Title block: OCHSNER Wärmepumpen Ges.m.b.H, drawing OTE3_GMLWplus_VX_EVO_V01, 'Digitale Ein- und Ausgänge'; the remaining small text.

Detail graphic combining a photo and a wiring sketch. Left: a photo of a black Reduxi Gateway device on a grey background; the logo 'reduxi' and the word 'Gateway' are printed on top (upside down), and a black two-pole connector is plugged into the front. Right: a drawing of the terminal pair on connector -X2: two terminals labelled 'EVU' and 'EVU' (the label '-X2' in blue). A green wire runs from the gateway connector to the first EVU terminal and a light blue wire runs from the gateway connector to the second EVU terminal. Red lines continue upward from both terminals.

Diagram (rendered product picture) of a dark grey Reduxi Gateway box, label "reduxi GATEWAY" on top. On its front side a terminal block with printed labels GND, PORT 1 (A, B), PORT 2 (A, B), 5V, and three round sockets labelled I1, I2, I3. Three blue split-core current sensors with black cables are plugged into I1, I2 and I3; the cables hang down in loops in front of the box.

Photo looking into an open blue metal cabinet. Three blue split-core current sensors are stacked at the left, each placed around a conductor. Around them are many cables: white, grey, blue, yellow-green and black wires, blue network cable, an orange wire connector in the middle and a terminal strip at the lower right. Floor tiles are visible at the lower left. No text or markings are legible.

Screenshot of the left sidebar of the Reduxi Configurator. Top: reduxi logo with the text CONFIGURATOR. Collapsed sections: Devices (plus icon) and Strategies (plus icon). Below, two buttons side by side: Add device (plus icon, marked with a blue highlight box) and Add strategy (plus icon). Below them two entries: Settings and Profile. The area to the right of the sidebar is empty white.

Screenshot of the Reduxi Configurator add-device wizard, step 1 of 3. Progress bar with three steps: 1 Basic settings (active, black circle), 2 Communication channel (grey), 3 Advanced settings (grey). Heading: Basic settings. Fields: Device type * : empty dropdown; Type * : empty dropdown; Name * : empty text field. Buttons: Back (bottom left), Next (bottom right, dark).

Screenshot of the Reduxi Configurator add-device wizard, communication step, partly cropped at the top (step tabs cut off). Heading: Communication channel and device configuration. Fields: Connection *: TCP-IP; IP *: gateway.local; Port *: 502; Modbus unit ID *: 1. The image is cut off below the Modbus unit ID field.

Screenshot of three input rows of the Reduxi Configurator communication channel form, each a dropdown with a small grey caption below it. Row 1: label CT- L1, selected value Auto detect from gateway, caption Current transformer. Row 2: label CT- L2, selected value Auto detect from gateway, caption Current transformer. Row 3: label CT- L3, selected value Auto detect from gateway, caption Current transformer.

Screenshot of a Reduxi Configurator settings form with eight dropdown fields, each with a grey hint line below. Off - relay 1: Off (hint: Setpoint of the relay 1 when heat pump setpoint is off). Off - relay 2: Not in use. ECO - relay 1: Not in use. ECO - relay 2: Not in use. ON - relay 1: On (hint: Setpoint of the relay 1 when heat pump setpoint is ON). ON - relay 2: Not in use. BOOST - relay 1: Not in use. BOOST - relay 2: Not in use. Each field has a matching hint line of the form Setpoint of the relay N when heat pump setpoint is ECO, ON or BOOST. The text is small.

Screenshot of the bottom button row of a Reduxi Configurator form. Left: button Back. Right: button "Test communication" marked with a blue box, and a dark button Next to its right.

Screenshot of the Reduxi Configurator add-device wizard, step 3 of 3 (Advanced settings). Progress bar with three black circles 1 Basic settings, 2 Communication channel, 3 Advanced settings (active). Heading: Advanced settings. Eight yes/no questions, each with a toggle that is off and a small default hint at the right: Do you want to set data-saving interval? (Default: 1 min); Do you want to set reading delay? (Default: 1000 ms); Do you want to set writing delay? (Default: 1000 ms); Do you want to set power generation limits and capabilities?; Do you want to set power consumption limits and capabilities?; Do you want to limit communication with the device to read-only? (Default: No); Do you want to invert direction for energy import and export? (Default: No); Do you want to exclude device from summary? (last question, small text; Default: No). Bottom row of three dropdowns: L1 is connected to main feed: L1; L2 is connected to main feed: L2; L3 is connected to main feed: L3. Buttons: Back (left) and a dark button at the right (label small, reads Done).

Screenshot of the Reduxi device page for a heat pump, Last measurements tab (tabs: Last measurements, Analysis, Archive; a dropdown and refresh icon at top right). Top tiles: "Control type" with buttons Auto (dark) and Manual (highlighted teal, selected); a second tile with a row of four small buttons, one highlighted teal (labels small: Off.). Card "Current": three values 0.55, 0.57, 0.59 (phase labels and units small). Card "Power": three values 0.4, 0.0, 0.4. Card "Energy": one value 78.7. Card "Other": rows with values OFF, MANUAL, OFF, OFF, ON. Card "Settings": Voltage values 246.00, 244.40, 246.30. Each value has a small timestamp.