LED 'A Marker' per RDSO/SPN/ 153/2023 or latest

The LED ‘A’ Marker Signal, designed in accordance with RDSO/SPN/153/2023 (or latest), is a high-efficiency white LED signal used to indicate the authority to pass an auto signal in Indian Railways. Featuring a durable IP65 housing, built-in current regulation, and phantom-free white LED lighting, it ensures reliable visibility in all weather conditions. The unit offers a fail-safe design with low power consumption, making it ideal for outdoor railway environments. Its UV-stabilized polycarbonate lens and compatibility with SSI and relay interlocking systems make it a reliable and long-lasting choice for mainline and suburban operations.

Key Features:

• Compliant with RDSO/SPN/153/2023 (or latest)
• Displays single character "A" using white LED
• Low-power, high-visibility output
• Phantom-free and fail-safe operation
• IP65-rated weatherproof enclosure
• UV-stabilized polycarbonate lens for outdoor durability
• Works in both RE and non-RE areas
• Supports relay and SSI interlocking systems

Its Uses:

• Used on automatic signals to indicate permission to pass
• Common on mainline, metro, and suburban railway networks
• Suitable for outdoor, all-weather operations
• Helps distinguish automatic signals from manually controlled ones