Why Choose the Finder 99.01.0.024.59 Green LED Relay Indication Module?
The Finder 99.01.0.024.59 is a compact green LED relay coil indication module designed for compatible Finder relay sockets. Part of the Finder 99 Series, this plug-in accessory provides a convenient visual indication when the associated relay coil circuit is energised, making it particularly useful for industrial automation, electrical control panels, machinery installations and maintenance applications.
Operating across a 6–24 V AC/DC voltage range, the Finder 99.01.0.024.59 is suitable for a variety of low-voltage relay control circuits. Its integrated green LED illuminates when the appropriate voltage is applied, allowing engineers and maintenance technicians to identify energised coil circuits without relying solely on external measuring equipment.
The module is designed to plug into selected Finder relay sockets, including compatible models from the 90, 94, 95 and 96 Series. This modular arrangement allows relay status indication to be incorporated into a control cabinet without requiring a separate panel-mounted indicator lamp.
Unlike a complete relay, the Finder 99.01.0.024.59 does not provide independent switching contacts or a relay coil. It is an accessory that works alongside a compatible relay and socket assembly. It is also important to distinguish this green LED indication module from other Finder 99 Series variants offering additional dedicated coil suppression functions.
Key Advantages
- Green LED indication provides clear visual feedback when a compatible relay coil is energised.
- 6–24 V AC/DC operating range supports common low-voltage industrial control circuits.
- AC and DC compatibility provides flexibility across different relay coil supply arrangements.
- Plug-in installation enables convenient fitting to compatible Finder relay sockets.
- Improved fault diagnosis helps technicians identify which relay control circuits are receiving voltage.
- Compact construction avoids the need for a separate indicator lamp in many installations.
- Green status indication can support consistent visual identification within organised control cabinets.
- Compatible with selected Finder 90, 94, 95 and 96 Series sockets.
- Modular accessory design allows replacement without changing the complete relay assembly.
- Suitable for machinery commissioning, electrical maintenance and PLC output testing.
- Designed for industrial electrical equipment and relay interface applications.
- Separate indication accessory enables engineers to select the appropriate functionality for their circuit.
Key Features
- Finder 99 Series accessory.
- Manufacturer part number: 99.01.0.024.59.
- Green LED indication module.
- Operating voltage: 6–24 V AC/DC.
- Suitable for AC control circuits within the specified voltage range.
- Suitable for DC control circuits within the specified voltage range.
- DC polarity requirement: positive supply connected to terminal A1.
- Relay coil energisation indication.
- Plug-in socket accessory.
- Compatible with selected Finder 90.20 and 90.21 sockets.
- Compatible with selected Finder 94.72, 94.73, 94.74 and 94.82 sockets.
- Compatible with selected Finder 95.63 and 95.65 sockets.
- Compatible with selected Finder 96.72 and 96.74 sockets.
- Compact construction for control cabinet installations.
- Indication-only functionality without a separately specified suppression network.
- CE and EAC approvals listed by distributors.
- Suitable for industrial automation and control equipment.
Technical Specifications
- Manufacturer: Finder
- Series: 99 Series
- Manufacturer part number: 99.01.0.024.59
- Product type: Relay coil indication module
- Accessory category: Pluggable relay function module
- Indication technology: LED
- LED colour: Green
- Rated operating voltage range: 6–24 V AC/DC
- AC operating voltage, 50 Hz: 6–24 V
- AC operating voltage, 60 Hz: 6–24 V
- DC operating voltage: 6–24 V
- Supply type: AC or DC
- DC connection polarity: Positive to A1
- Primary function: Visual indication of relay coil energisation
- Dedicated suppression network: Not specified for this LED indication version
- Mounting arrangement: Plug-in connection to a compatible relay socket
- Compatible socket examples: Finder 90.20, 90.21, 94.72, 94.73, 94.74, 94.82, 95.63, 95.65, 96.72 and 96.74
- Relay included: No
- Socket included: No
- Product approvals listed: CE, EAC
- EAN / GTIN: 8012823104423
- Country of origin: Italy
- Application: Low-voltage relay coil status indication
Clear Green LED Indication for Relay Coil Monitoring
The main purpose of the Finder 99.01.0.024.59 is to provide an easily visible indication that a compatible relay coil circuit is energised. When the appropriate operating voltage is applied across the relevant connections, the integrated green LED illuminates.
This is particularly useful in electrical control cabinets containing several relays. Without indication modules, technicians may need to refer to controller diagnostics or use electrical measuring instruments to determine whether individual coil circuits are receiving an operating signal.
With a green LED module installed, the technician can make a quick visual assessment of which relay coils are energised. This can help during commissioning, fault-finding, PLC output verification and routine equipment maintenance.
For example, if a programmable logic controller is expected to energise a relay during a particular machine sequence, the green indicator can provide a visible reference for the presence of the corresponding coil supply.
However, an illuminated LED does not independently confirm that the relay contacts have changed state. The module indicates the electrical condition of the coil circuit, not the actual mechanical position of the contacts or the successful operation of the connected load.
For applications requiring confirmed switching status, contact feedback or an appropriate monitoring circuit should be used.
6–24 V AC/DC Operation for Low-Voltage Control Systems
The Finder 99.01.0.024.59 is designed for operation across a 6–24 V AC/DC range. This makes it suitable for compatible relay control circuits operating at low voltages, including applications using a nominal 12 V or 24 V coil supply.
Its ability to operate with both alternating and direct current provides flexibility for equipment designers using different control supply arrangements.
For DC installations, Finder specifies that the positive supply must be connected to terminal A1. This polarity requirement should be observed when selecting the relay socket wiring arrangement and installing the module.
The module must not be connected directly to a control supply exceeding its specified operating voltage. In particular, it is not suitable for direct connection to 110 V or 230 V relay coil circuits.
Higher-voltage applications require a different Finder 99 Series module selected for the intended supply range. The exact module part number should be checked against the manufacturer's technical documentation.
Compatibility with Selected Finder Relay Sockets
The Finder 99.01.0.024.59 is designed to be used with compatible Finder relay sockets featuring the appropriate accessory connection arrangement.
Documented compatible socket types include selected models from the Finder 90, 94, 95 and 96 Series. Examples include 90.20, 90.21, 94.72, 94.73, 94.74, 94.82, 95.63, 95.65, 96.72 and 96.74.
These socket families support different relay types, contact arrangements and installation methods. The indication module must therefore be selected according to the exact socket model and the voltage applied to the relay coil.
For example, the module may be used with a compatible Finder 96 Series socket when the installed relay has a coil supply within the specified 6–24 V AC/DC operating range.
It is important not to assume that every Finder relay socket accepts the same accessory. The module's physical fit and electrical compatibility should be checked before ordering.
Understanding LED Indication and Coil Suppression
The Finder 99 Series includes several relay accessory variants designed for different control circuit requirements. Some provide LED indication, while others combine indication with additional coil suppression components.
The Finder 99.01.0.024.59 is identified as a green LED indication module. Its principal function is to provide visual feedback when the relay coil is energised.
Other modules in the Finder 99 Series may incorporate components such as diodes, varistors or RC networks to manage electrical transients associated with switching an inductive relay coil.
These suppression components can be useful for reducing voltage spikes and electromagnetic interference in suitable circuits. However, the correct type of suppression depends on whether the relay coil is operated by AC or DC, its nominal voltage and the required release characteristics.
The Finder 99.01.0.024.59 should therefore not be selected as a substitute for a dedicated suppression module unless the electrical design specifically requires only its indication function.
For installations where both LED indication and suppression are needed, engineers should choose a Finder accessory that explicitly provides the required combined functions.
Green LED Compared with the Red LED Version
The Finder 99.01.0.024.59 is the green LED version of the low-voltage indication module. The corresponding Finder 99.01.0.024.50 uses a red LED.
Both are designed for 6–24 V AC/DC relay coil indication, but they provide different visual colours. This allows equipment designers to select the indication colour that best suits their control panel conventions.
For example, a green LED may be used where the installation's labelling and operating philosophy associate green with a particular enabled or active condition. A red LED may be preferred for a different category of status.
The LED colour alone does not define whether a machine is operating safely or whether an electrical condition represents an alarm. The meaning of the indication must be established by the equipment design, circuit documentation and appropriate labels.
When replacing an existing module, the complete Finder part number should be checked to ensure the correct LED colour and voltage range are maintained.
Simple Plug-In Installation and Maintenance
The Finder 99.01.0.024.59 is intended to fit into the appropriate accessory position of a compatible Finder relay socket. This provides a compact installation arrangement without requiring a separate indicator to be mounted through the control cabinet door or panel.
Before fitting the module, the electrical supply should be safely isolated and the socket's compatibility confirmed. The module should then be installed according to Finder's connection diagram for the relevant socket.
The relay coil supply must remain within the module's 6–24 V AC/DC operating range. For DC applications, the specified A1 positive polarity must be observed.
After installation and safe re-energisation, the green LED provides a visual reference when the relay coil circuit receives the appropriate operating voltage.
Because the module is a separate plug-in accessory, it can be replaced independently of the relay and socket when required, provided the replacement is electrically and mechanically compatible.
Typical Applications
- Industrial automation control panels.
- Relay coil energisation indication.
- PLC output relay interface assemblies.
- Machinery control and auxiliary switching circuits.
- Electrical cabinet commissioning.
- Industrial equipment fault diagnosis.
- Low-voltage AC relay control circuits.
- Low-voltage DC relay control circuits.
- Manufacturing and production machinery.
- Conveyor and material handling equipment.
- Industrial process control installations.
- Building management and HVAC control systems.
- Equipment status indication.
- OEM electrical equipment manufacturing.
- Replacement of compatible green LED relay indication modules.
