Unassembled Kit Sound Switch Controller Delay Time Off Relay 12VDC 10A [FK408] &lt;==Beware to Add To Cart !!! Only sold by Thaikits for product warrantee and free technical support. Require 12VDC Supply, current consume 60mA 1 pot to adjust the sensitivity of MIC on board / 1 pot to adjust delay time off ( 1 - 60 second ) [ NO ] Relay 12V DC, one contact 250VAC 7A / 24VDC 10A PCB size 2.15" x 2.44"