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".

Photo composite with annotations. Left: product photo of a black Reduxi Gateway device (logo reduxi Gateway printed on the top, shown upside down; four small indicator LEDs on top). On the front edge are two plug-in terminal blocks labelled RELAY 1 and RELAY 2 (each with NO, COM, NC) and three round sockets labelled CT1, CT2, CT3. Four coloured wires (red, blue, orange, yellow) are drawn from the relay terminal blocks to the right. Right: photo of the green circuit board of the heat pump with green screw terminal blocks. Printed labels: TBI.2, TBI.3, CN1A, IN5, IN6, IN7, IN10, IN8, IN9, IN11, IN12, OUTA. The coloured lines end at the terminals IN11 and IN12: red and blue at IN11, orange and yellow at IN12. Text boxes below: SG-ready NO conntact 1 (red line), SG-ready NO conntact 2 (yellow line), SG-ready COM conntact 1, 2 (blue and orange lines); spelling conntact as printed.

Screenshot of a page from a Mitsubishi heat pump manual (the manufacturer document). Section "4. Electrical work", "4.5 Connecting inputs/outputs", text: "For multiple outdoor units control with FTC (Slave), see section 9." Sub-heading "Signal inputs". Table columns: Name, Terminal block, Connector, Item, OFF (Open), ON (Short). Rows: IN1, TBI.1 7-8, Room thermostat 1 input *1, OFF: Refer to SW2-1 in <5.1 DIP Switch Functions>. IN2, TBI.1 5-6, Flow switch 1 input, Refer to SW2-2 in <5.1 DIP Switch Functions>. IN3, TBI.1 3-4, Flow switch 2 input (Zone1), Refer to SW3-2 in <5.1 DIP Switch Functions>. IN4, TBI.1 1-2, Demand control input, OFF: Normal, ON: Heat source OFF/ Boiler operation *3. IN5, TBI.2 7-8, Outdoor thermostat input *2, OFF: Standard operation, ON: Heater operation/ Boiler operation *3. IN6, TBI.2 5-6, Room thermostat 2 input *1, Refer to SW3-1. IN7, TBI.2 3-4, Flow switch 3 input (Zone2), Refer to SW3-2. IN8, TBI.3 7-8, Electric energy meter 1; IN9, TBI.3 5-6, Electric energy meter 2; IN10, TBI.2 1-2, Heat meter; these three share the note *4. IN11, TBI.3 3-4 and IN12, TBI.3 1-2: Smart grid ready input, note *5. INA1, TBI.4 1-3, connector CN1A, Flow sensor input, note *6. A red hand-drawn oval circles the text "Smart grid ready input" (the word "Smart" is highlighted blue). Below the table: "*1. Set the ON/OFF cycle time of the room thermostat for 10 minutes or more; otherwise the compressor may be damaged." The image is cut off at the bottom of the next note.

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.

Scanned manual page "4.9 Smart grid ready" from the heat pump documentation. Text: "In DHW or heating operation, the commands in the table below can be used." Table columns: IN11, IN12, Meaning. Rows: OFF (open), OFF (open), Normal operation; ON (short), OFF (open), Switch-on recommendation*1; OFF (open), ON (short), Switch-off command; ON (short), ON (short), Switch-on command*2. Note box: To activate this function, settings on the main remote controller are required (Main menu → Service → "Function settings" Ref. add: 0, Unit: 1). Heating operation mode (compensation curve or flow temp. control) requires the optional wireless remote controller. *1 Switch-on recommendation has 2 modes: Mode 7 Hot water operation, additional boost temperature is added onto the usual DHW target temperature (1-Inactive (default) /2-Target temp. +3°C/3-Target temp. +5°C); Mode 8 Heating operation, Heating ON (permitted heating with thermo ON) range is extended (1-Inactive (default) /2-Thermo ON temp. +2°C/3-Thermo ON temp. +3°C). *2 Switch-on command has 2 modes: Hot water operation: with electrical heater or DIP SW 1-2 ON → Target temp.: 60°C; without electrical heater and DIP SW 1-2 OFF → Target temp.: 55°C; Heating operation: Heating is ALWAYS permitted. Top right: terminal block TBI.3 with terminals 7, 8, 9, 10; terminals 7-8 are bridged and labelled IN11, terminals 9-10 are bridged and labelled IN12. Two controller display screens dated 1 Sep 2015 12:30: first "FUNCTION SETTING" with Ref. add 0 and Unit# Grp/1/2/3/4/ALL (1 selected), buttons down, up, minus, plus. Second: Ref. add 0 Unit: 1, page 1/3, lines Mode 7 1/2/3 (1 selected), Mode 8 1/2/3 (1 selected), Mode 9 1/2/3, Mode 10 1/2/3, Mode 11 1/2/3, buttons down, up, left, right.

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 settings form for the heat pump relay logic, with eight dropdown fields, each with a grey help text under it, and two buttons. Fields: "Off - relay 1": On (help: Setpoint of the relay 1 when heat pump setpoint is off). "Off - relay 2": On (help: Setpoint of the relay 2 when heat pump setpoint is off). "ECO - relay 1": Off (help: Setpoint of the relay 1 when heat pump setpoint is ECO). "ECO - relay 2": On (help: Setpoint of the relay 2 when heat pump setpoint is ECO). "ON - relay 1": On (help: Setpoint of the relay 1 when heat pump setpoint is ON). "ON - relay 2": On (help: Setpoint of the relay 2 when heat pump setpoint is ON). "BOOST - relay 1": On (help: Setpoint of the relay 1 when heat pump setpoint is BOOST). "BOOST - relay 2": Off (help: Setpoint of the relay 2 when heat pump setpoint is BOOST). Buttons: Back (bottom left), Test communication and Next (bottom right).

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.