Flash Relay Alarm 81.25311.0023 SHACMAN

Product Introduction

This Flash Relay Alarm 81.25311.0023 is an OEM electrical control component specifically designed for heavy-duty commercial vehicles (e.g., MAN series trucks). Rated at 24V DC, it features a rugged black epoxy-sealed housing with precision-pin electrical terminals clearly marked with industry-standard codes (J, 86, 15, 86a, 49a, etc.). Engineered for high current handling and anti-interference performance, it serves as the core control unit for the vehicle’s turn signal and hazard warning light systems. Manufactured to strict OEM tolerances, it ensures stable signal switching and perfect compatibility with the vehicle’s original electrical architecture.

Core Function

1. Flasher Control: Precisely regulates the on/off timing of the vehicle’s left/right turn signals and hazard warning lights, generating the standard rhythmic flashing signal.

2. Fault Alarm Function: Triggers an audible warning tone when a bulb is burned out or a circuit fault is detected, prompting the driver to check the lighting system in a timely manner.

3. Voltage Stability: Maintains consistent flashing frequency under fluctuating vehicle battery voltage (typical of heavy-duty operation), avoiding fast/slow flashing malfunctions.

4. Durable Sealed Design: The fully encapsulated housing provides complete protection against dust, moisture, oil, and extreme vibration, ensuring a long service life in harsh working conditions.

5. Plug-and-Play Compatibility: Exact matching of pin definitions (49a/R, 31/L, 49/49b) and mounting dimensions with the original equipment, enabling direct replacement without wiring modification.