Description: \nThe board circuit is simple, the wiring is easy and the work is safe and reliable. With LED work indicator, it is extinguished when protection, and lights up when normal work. 30A high current relay, suitable for high-power amplifier. \nThe board has a power on delay (about 3 seconds) and DC protection (starting control voltage around 1V) function. \n2.0 Channel high-power speaker protection board, double-sided PCB tinned 1.6mm, UPC1237 speaker protection chip, PB12N step-down module, audio wiring with 7.02 terminals. Full sealed large current relay, it can control power 900W, overcurrent 30Ax2. \nBoard Size: 85mm x 70mm x 22mm \nPower Supply: AC 85V-265V 50-60Hz \nWithstand Current: Max 30A (900W) \nCore IC: UPC1237 speaker protection integrated IC, relay. \nNotice: The speaker protection board requires a separate winding power supply, It can not share power supply with power amplifier circuit! \nPacking List: \n1pcs x UPC1237 30A Speaker Protection Board