This is the SMT American Police Siren Kit. This kit will produce a sound very similar to an American Police siren. It is uses two LM555 Timers to create this sound which has two adjustments. One adjustment is for varying the rise and fall times and the other is for varying the tone. Use this in your model train or RC car setups or anywhere you would like the sound of an American Police siren.

This Surface Mount Technology (SMT) project can be built in one night. A small, 1-Watt speaker is included with this kit. It is an excellent hobby kit to build that produces an adjustable Police siren sound for your hobby models. Here is an excellent chance to build SMT circuit that work.

These kits are also offered with a "Built & Tested" option for those that do not want to build the kits themselves.

Both PCBs are approximately 1.2" long x 2.2" wide made of .062" FR-4 epoxy glass. All holes are plated through. The traces are wide to withstand numerous circuit changes.

This kit does not include the tools you will need to assemble the circuit. You will need tools such as a soldering iron, solder, wire cutters, etc.