The connection diagram is shown below. The component details with cost is also withthis. The battery supply should be kept in a battery container to ensure the connection.The volume of the sound of this circuit is so much that it can be used as a calling bell. Ifanyone want to reduce the volume of the circuit then insert a resistance () in place of theblue line connection. In this circuit please don't give the supply beyond 3 volt withoutmodification as the IC may got damaged. It is better that you should not run this circuitin Eliminator as most of the available eliminator don't have a good filter built in and haveno precision over voltage protection. The circuit should not be run in Rechargeablebattery also if the Speaker resistance is less than 8 Ohm and may burn the Transistor