Audio Power Amplifier Speaker Protection Circuit Board 2.1 Three-channel High-power Relay Speaker Protection Module Protector

100% brand new and high quality
Features:
Speaker protection board has features of starting delay of about 3 seconds, prevent DC impact on the speaker when starting up. The protection board has simple circuit, safe and reliable.
Protection board uses three 10A high-power relays, which can be easily connected to various power amplifier boards.
Dual indicator lights display, one is the power indicator, the other is the switch indicator.

Specifications:
Working voltage: AC 12-18V, independent power supply is required.
Material: Plastic
Size: app.67x50mm/2.64x1.97in
Color: As pictures shown
Quantity: 1pc

Note:
No retail package.
Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package includes:
1 x Protection Circuit Board (other accessories demo in the picture is not included.)