12V 30A Speaker Protection board for Audio Power Amplifiers

12 V Speaker Protection Relay Board (30 A) for Audio Power AmplifiersThis board is designed to protect speakers by controlling the output connection through a relay based on input conditions such as power-on delay and DC fault detection.Working Voltage:Input supply: 0 to 12 V AC (step-down transformer or auxiliary AC source)Current Capacity:Maximum switching current: up to 30 A (depends on relay rating and load conditions)Relay type: L90 / H90 T-type relayProtection Features:Turn-on delay: approximately 1 to 2 seconds to prevent speaker damage from power-on/off transientsDC detection: disconnects speakers when DC voltage of approximately 2 V or higher is detectedLED indicators: red and green LEDs for status and fault indicationBoard Specifications:PCB dimensions: 75 mm × 55 mmConfiguration:Designed to be connected between amplifier output and speaker loadRequires proper wiring and compatible AC supply for relay operationIntended Use:Speaker protection in audio amplifier systemsPrevention of speaker damage due to DC offset and switching transientsSuitable for home audio systems, subwoofer amplifiers, and DIY audio projects