Abstract: A self-adhesive electrical terminal block is provided for making electrical connections to burglar alarm foil strips on glass windows, glass doors, and the like. The terminal blocks of the invention are constructed as detachable pairs. Each pair may be used to connect to a foil whenever both ends of the foil are brought off the same side of the glass; and the individual pairs may be separated into single blocks to connect to a foil when the ends of the foil are brought off opposite ends of the glass. The terminal blocks of the invention are constructed to be sold in strips on a single adhesive base to facilitate handling. A channel is formed in the top of the individual blocks to receive the ends of the foil and to facilitate connecting the foil to the block.