24 Volt DC power supply for use with bells & horns on the 6000 series payroll clocks. Simply plug in a standard 110 volt outlet and connect to your time clock with standard bell wire (not included) and you can send signals to either bells or horns with your 6000 series payroll time recorder. Dimensions: 3 1/2"H x 2 1/2"W x 2 1/4"D. Shipping charges apply.