KUSTOM KHS-PDA1 #0113,DC 12v 3.5 input jack, tip+ with red indicator light, 4 wire dual interface A and B with green indicator activity light for Dbell and Dphone, weighs 2.4 oz, with 4 screws holding aluminum faceplate and hard plastic or fiberglass casing as seen in photos, black with white lettering and green inputs, measurement's are, 3"inch x 2"inch x 1"inch, Untested