Quick view GF Signet Clearance Sale ~ GF Signet 389004011 Two Input (No Output) I/O Module for 8900 Controller MSRP: $109.99 Clearance Sale: NOS (New Old Stock) Brand New Never Used. Free Shipping!!! GF Signet 389004011 Two Input (No Output) I/O Module for 8900 S/N: 60607140561 MSRP: $109.99 Add to Cart The item has been added Add to Wish list Compare