Alarm & Indicator Panels FOR MARINE & INDUSTRY BY WIESLOCH MARINE & INDUSTRIES BV

At Wiesloch Marine & Industries™ BV, we supply high-quality alarm and indicator panels for industrial and marine applications. Our panels are built to the highest German standards, offering reliable malfunction detection, status indication, and pre-alarm signalling.

Our alarm units are easy to install and built to last, with a robust design that ensures dependable performance in engine rooms, boiler systems, fuel circuits, and thermal oil installations. Whether you’re monitoring a single fault or a complex multi-point alarm network, our units provide clear LED indication and flexible relay outputs.

We specialize in KFM Regelungstechnik alarm units, including the widely used 821, 822, and modular 826 series. These panels are trusted by OEMs, shipyards, and maintenance teams around the world for their durability, clarity, and versatility.

Whether you need a single-channel malfunction indicator or a multi-channel panel with grouped alarms and clear LED indication, our alarm panels offer dependable safety and control wherever you need it.

The back of a KFM 821A20 unit with green LEDS to display the operating status of a heavy fuel oil system.
The back of a KFM 821A20 unit with green LEDS to display the operating status of a heavy fuel oil system.
The KFM 822.400 is a panel-mounted alarm unit with 16 LEDs (4 red, 4 yellow, 8 green) that indicates operating status, pre-alarms, and malfunctions, with external push-button inputs and collective relay outputs for grouped alarms.
The KFM 822.400 is a panel-mounted alarm unit with 16 LEDs (4 red, 4 yellow, 8 green) that indicates operating status, pre-alarms, and malfunctions, with external push-button inputs and collective relay outputs for grouped alarms.
A KFM alarm unit displaying up to 16 malfunctions related to the ship’s fuel oil heating and supply system. The unit is currently indicating a high-high temperature alarm in the exhaust gas of Economiser 1.
A KFM alarm unit displaying up to 16 malfunctions related to the ship’s fuel oil heating and supply system. The unit is currently indicating a high-high temperature alarm in the exhaust gas of Economiser 1.
This is a KFM 821A operation indication unit capable of displaying up to 16 operating statuses in real time. Currently, it indicates that the burner is in operation, the burner is ready to start, and the system is running on MDO.
This is a KFM 821A operation indication unit capable of displaying up to 16 operating statuses in real time. Currently, it indicates that the burner is in operation, the burner is ready to start, and the system is running on MDO.
This is a KFM alarm unit capable of displaying up to 16 malfunction conditions related to the fuel oil heating and tracing system. At present, no alarms are active.
This is a KFM alarm unit capable of displaying up to 16 malfunction conditions related to the fuel oil heating and tracing system. At present, no alarms are active.
The KFM 821A21gg is a panel-mounted operation indicator unit from the 821 series, designed to display the status of multiple system components using green LEDs.
The KFM 821A21gg is a panel-mounted operation indicator unit from the 821 series, designed to display the status of multiple system components using green LEDs.
This is a KFM malfunction indicator panel 821A20rr during testing, with all alarms active.
This is a KFM malfunction indicator panel 821A20rr during testing, with all alarms active.
An example of how the operation indication unit 821A20gg might appear on the drawing of the oil fired heater.
An example of how the operation indication unit 821A20gg might appear on the drawing of the oil fired heater.
A KFM 821A20y pre-alarm indicator unit, used to display early warning conditions that may require attention.
A KFM 821A20y pre-alarm indicator unit, used to display early warning conditions that may require attention.
A KFM 821A20r malfunction indicator unit, used to display active faults or alarms using red LEDs.
A KFM 821A20r malfunction indicator unit, used to display active faults or alarms using red LEDs.
The back of a KFM malfunction alarm unit, showing the possibility to add an output horn signal to the alarm unit.
The back of a KFM malfunction alarm unit, showing the possibility to add an output horn signal to the alarm unit.
The back of a KFM 821A20gg operation indication unit.
The back of a KFM 821A20gg operation indication unit.
Three KFM indicator units installed in an Aalborg system panel, used to monitor burner operation and fuel oil heating alarms.
Three KFM indicator units installed in an Aalborg system panel, used to monitor burner operation and fuel oil heating alarms.
An example of how the 822.004 KFM alarm and indication unit from the 822 series might appear on the technical drawing of a system.
An example of how the 822.004 KFM alarm and indication unit from the 822 series might appear on the technical drawing of a system.
The back of a KFM 821A20gg status or indication unit.
The back of a KFM 821A20gg status or indication unit.
The back of a KFM 822.400 alarm and status unit with 16 LEDs (that indicates operating states, pre-alarms, and malfunctions, with optional relay outputs and external reset/test inputs.
The back of a KFM 822.400 alarm and status unit with 16 LEDs (that indicates operating states, pre-alarms, and malfunctions, with optional relay outputs and external reset/test inputs.
The back of a KFM 822.0048 indication unit with 16 inputs used to display the operating status and control signals of for example pumps, burners, or valves.
The back of a KFM 822.0048 indication unit with 16 inputs used to display the operating status and control signals of for example pumps, burners, or valves.
A switch board with a KFM 82116002hi unit in it in the engine room of a ship.
A switch board with a KFM 82116002hi unit in it in the engine room of a ship.
The KFM 82116002hi is a 16-channel 24 V DC alarm indicator panel with built-in reset and test buttons, designed to display high-level system faults or statuses in control systems using low-voltage signal logic.
The KFM 82116002hi is a 16-channel 24 V DC alarm indicator panel with built-in reset and test buttons, designed to display high-level system faults or statuses in control systems using low-voltage signal logic.
A KFM pre-alarm unit for the expansion tank and oil fired boiler of a ship.
A KFM pre-alarm unit for the expansion tank and oil fired boiler of a ship.
A KFM alarm unit for the expansion tank and oil fired boiler of a ship.
A KFM alarm unit for the expansion tank and oil fired boiler of a ship.
A KFM 821A21r malfunction indicator with 8 red LEDs and a shared alarm relay mounted in a panel in the engine room of a ship.
A KFM 821A21r malfunction indicator with 8 red LEDs and a shared alarm relay mounted in a panel in the engine room of a ship.
A KFM 821A21g operation indicator with 8 green LEDs, used to display the active status of components.
A KFM 821A21g operation indicator with 8 green LEDs, used to display the active status of components.
A control cabinet with two KFM 821A21rg malfunction units and one KFM 821A20gg status indicator, used together to monitor both system faults and operational states via 230 V inputs.
A control cabinet with two KFM 821A21rg malfunction units and one KFM 821A20gg status indicator, used together to monitor both system faults and operational states via 230 V inputs.
A control cabinet on a ship with multiple KFM malfunction units and KFM status indicators.
A control cabinet on a ship with multiple KFM malfunction units and KFM status indicators.
Two KFM indicator panels: the left unit displays operational statuses of pumps using green LEDs, while the right unit indicates active fuel oil system alarms with red LEDs and bilingual English–German labels.
Two KFM indicator panels: the left unit displays operational statuses of pumps using green LEDs, while the right unit indicates active fuel oil system alarms with red LEDs and bilingual English–German labels.
Three KFM indicator panels monitoring a marine burner and economiser system, with the left unit displaying burner operating status via green LEDs and the center and right units showing active high-temperature and flow-related alarms using red LEDs with English–German labels.
Three KFM indicator panels monitoring a marine burner and economiser system, with the left unit displaying burner operating status via green LEDs and the center and right units showing active high-temperature and flow-related alarms using red LEDs with English–German labels.
A KFM 821A20y pre-alarm panel with yellow LEDs, used to indicate early warning conditions such as abnormal temperatures or pressure drops in a thermal oil and fuel system, with bilingual labels in English and German.
A KFM 821A20y pre-alarm panel with yellow LEDs, used to indicate early warning conditions such as abnormal temperatures or pressure drops in a thermal oil and fuel system, with bilingual labels in English and German.
A KFM malfunction panel showing 16 alarm conditions for a fuel and thermal oil system; it currently indicates thermal fluid flow failure and critically low fuel oil pressure, both flagged via red LEDs.
A KFM malfunction panel showing 16 alarm conditions for a fuel and thermal oil system; it currently indicates thermal fluid flow failure and critically low fuel oil pressure, both flagged via red LEDs.
Three KFM indicator panels: the left unit displays active operating conditions such as pumps and burners in operation via green LEDs, the center unit signals a pre-alarm for low combustion air with a yellow LED, and the right unit monitors 16 fault conditions in a thermal oil and fuel system, currently showing no active alarms.
Three KFM indicator panels: the left unit displays active operating conditions such as pumps and burners in operation via green LEDs, the center unit signals a pre-alarm for low combustion air with a yellow LED, and the right unit monitors 16 fault conditions in a thermal oil and fuel system, currently showing no active alarms.
This KFM indicator panel displays 16 operational states in a burner control system; it currently shows that Thermal Fluid Pump 1 is running, the burner is ready to start, and operating in both forced partial load and partial load modes.
This KFM indicator panel displays 16 operational states in a burner control system; it currently shows that Thermal Fluid Pump 1 is running, the burner is ready to start, and operating in both forced partial load and partial load modes.
This KFM alarm panel monitors 16 potential faults in a burner and thermal fluid heating system; it currently signals a high-high alarm for flue gas temperature, indicating potential overheating or burner malfunction.
This KFM alarm panel monitors 16 potential faults in a burner and thermal fluid heating system; it currently signals a high-high alarm for flue gas temperature, indicating potential overheating or burner malfunction.
This KFM operation indication panel displays the status of the fuel and burner system; currently it shows that burner conditions are correct and that the system is operating on MDO (Marine Diesel Oil).
This KFM operation indication panel displays the status of the fuel and burner system; currently it shows that burner conditions are correct and that the system is operating on MDO (Marine Diesel Oil).
A KFM 821A20rr alarm unit with 16 inputs and reset/LED test buttons.
A KFM 821A20rr alarm unit with 16 inputs and reset/LED test buttons.
This KFM indication unit is currently displaying a yellow warning for low thermal fluid system temperature.
This KFM indication unit is currently displaying a yellow warning for low thermal fluid system temperature.
The back of a KFM 821A21rg malfunction unit.
The back of a KFM 821A21rg malfunction unit.
The back of a KFM 821A20gg operation indication unit.
The back of a KFM 821A20gg operation indication unit.
This triple KFM panel setup shows burner and fuel oil system status, with active indicators for burner operation, MDO in use, and an alarm for thermal fluid flow being too low.
This triple KFM panel setup shows burner and fuel oil system status, with active indicators for burner operation, MDO in use, and an alarm for thermal fluid flow being too low.
A KFM 822400 alarm monitoring unit designed to display up to 16 individual malfunction signals using LED indicators.
A KFM 822400 alarm monitoring unit designed to display up to 16 individual malfunction signals using LED indicators.
A KFM 822400 alarm unit, designed to monitor and visually display critical faults in boiler systems such as low or high water pressure, low water level, high water temperature, burner flange open, and burner malfunction, with space for up to 16 alarm indicators.
A KFM 822400 alarm unit, designed to monitor and visually display critical faults in boiler systems such as low or high water pressure, low water level, high water temperature, burner flange open, and burner malfunction, with space for up to 16 alarm indicators.
A control panel with multiple alarm units and temperature controllers displays the operational status and alarms for the boiler and heating system, including water pressure, level, and temperature conditions.
A control panel with multiple alarm units and temperature controllers displays the operational status and alarms for the boiler and heating system, including water pressure, level, and temperature conditions.
An example of how the 822.004 KFM alarm and indication unit from the 822 series might appear on the technical drawing of a system.
An example of how the 822.004 KFM alarm and indication unit from the 822 series might appear on the technical drawing of a system.
A KFM 821A20y indication unit designed to display up to 16 operating conditions using yellow LEDs, typically used for non-critical system status monitoring.
A KFM 821A20y indication unit designed to display up to 16 operating conditions using yellow LEDs, typically used for non-critical system status monitoring.
A KFM alarm unit for pre-alarms and malfunction alarms with single inputs with 16 inputs and with a reset button and a led test button in the engine room of a ship for the fuel oil booster or conditioning system.
A KFM alarm unit for pre-alarms and malfunction alarms with single inputs with 16 inputs and with a reset button and a led test button in the engine room of a ship for the fuel oil booster or conditioning system.
A KFM operation unit for the indication of the status of the Heavy Fuel Oil (HFO) booster and heating system.
A KFM operation unit for the indication of the status of the Heavy Fuel Oil (HFO) booster and heating system.
A KFM indication unit for the indication of system warnings, such as tank levels, flow rates, system & economiser temperatures.
A KFM indication unit for the indication of system warnings, such as tank levels, flow rates, system & economiser temperatures.
A KFM 821A20rr- alarm unit, with 19 fault inputs and 5 relays for the Heavy Fuel Oil (HFO) booster and heating system of a ship.
A KFM 821A20rr- alarm unit, with 19 fault inputs and 5 relays for the Heavy Fuel Oil (HFO) booster and heating system of a ship.
A KFM indication unit and a KFM alarm unit inside a switch panel.
A KFM indication unit and a KFM alarm unit inside a switch panel.
A KFM operation indication unit for 16 inputs for a HFO system.
A KFM operation indication unit for 16 inputs for a HFO system.
A KFM r821A20gg- operation indication unit with 18 inputs.
A KFM r821A20gg- operation indication unit with 18 inputs.

KFM 822 Series – Malfunction alarm displays

The KFM 822 series consists of compact alarm and indication panels (96×96 mm) designed to display up to 16 status signals using color-coded LEDs. These panels are widely used in marine, boiler, and industrial systems to monitor malfunctions, pre-alarms, and operational states.

Each panel in the KFM 822 series is tailored to the specific needs of the system it monitors, offering a flexible combination of red, yellow, and green LEDs to represent malfunctions, warnings, and normal operating conditions. The type number of each unit directly reflects its LED configuration, making it easy to identify the layout at a glance. Thanks to their reliable performance, clear visual indication, and compatibility with both 230 V AC and 24 V DC inputs, these units are a trusted choice in control panels for fuel systems, burners, pumps, and safety-critical installations.

Type Number LED Breakdown Typical Use
822.020 0 red, 2 yellow, 0 green Two pre-alarms only
822.200 2 red, 0 yellow, 0 green Two malfunctions only
822.004 0 red, 0 yellow, 4 green Four status indicators
822.211 2 red, 1 yellow, 1 green Combined malfunction, pre-alarm, and operation
822.400 4 red, 0 yellow, 0 green Four fault conditions (classic alarm panel)
822.043 0 red, 4 yellow, 3 green Four pre-alarms and three operation states

KFM 821 Series - Malfunction alarm displaYS

The KFM 821 series includes compact indicator and alarm units (96×96 mm) designed to visually display operating conditions, fault signals, and pre-alarms in critical systems. With up to 16 front-mounted LEDs, these units provide instant status feedback in marine and industrial environments. Depending on the model, the LEDs light up red, yellow, or green to indicate malfunctions, warnings, or normal operation states. Most units also feature external terminals for reset and LED test buttons, and are available with or without front-panel controls.

Unlike the 822 series, the 821 series units typically operate without internal relay outputs, making them ideal for local indication where external signaling isn’t required. They are frequently used in fuel treatment skids, burner systems, and auxiliary systems such as cooling water or lubrication oil monitoring. Whether monitoring tank levels, heater status, or pump conditions, the 821 series offers a reliable and clearly visible solution for on-site supervision of essential parameters.

Type Number LED Breakdown Front Controls Typical Use
821A20gg 16 green LEDs Reset & LED test Operation indication (e.g. burner or pump status)
821A21ra 16 red LEDs Reset & LED test Malfunction display for alarms
821A20y 16 yellow LEDs No buttons Warning or pre-alarm display
821A21rg 8 red, 8 green LEDs Reset & LED test Mixed alarm and operation status display
821A20гr 16 red LEDs No buttons Simple alarm indicator with remote control input