DIY Dual Relay 7812+UPC1237 Speaker Protection Board Kit

Features: 1. UPC1237 best performance as core devices, with power-on delay and DC protection, power anti-shock function 2. UseOMRIN original high-current relay as the core of the device is not afraid of contact ignition and oxidation 3. Using 7812 as a regulator, wide supply range, up to any range AC12V to AC24V 4. The circuit is simple and reliable. Produced very easily, no need debugging 5. Silver contacts. 6. Precision CNC double-sided circuit board in small size, easy installed 7. Start delay 1S closed, no need to use 3S delay. DC monitoring and protection, real-time protection speaker. Disconnect the speaker off instantly. 8. This version can be controlled 500W amplifier, each channel using a relay control. 9. Power: AC 12-24V 10. PCB size: 6.9cm 57mm Note: All the elements, you need to solder by yourself Package included: 1 x Dual Relay 7812+UPC1237 Speaker Protection Board Kit