5pcs Audio Speaker Protection Board Amplifier Components DC Protect Kit DIY

Specification: Input voltage: AC12-15 V Size(L*W*H): 6x 4 x 2.5 cm (Finished) Feature: With power on delay (about 3 seconds) and DC protection (control voltage around 1 V) With LED status display, when the protection light, the normal work time off Using 15 A large current relay Working voltage aAC 12 to 15 V, need independent power supply. Package includes: 5 x Double-sided circuit boards 5 x 4148 20 x Capacitor 30 x Transistor 25 x Metal film resistors 5 x Bridge Rectifier / three-terminal regulator /each 5 x LED (light emitting diode) 25 x erminal Block 10 x 15A Relay 5 x Kit assembly instructions