StepsToDo Water Sensor pre-assembled project on cardboard | Water overflow & Rain alarm Educational Electronic Hobby Kit

- Best suited for those who wish to submit a physics science projects in school/college. - Can be used as 'class room teaching aid' or 'science fair/exhibition project. - This product comes with detail printed notes which explains the theory and circuit diagram of the project. - It is a 100% complete working, ready-to-use handmade project on card board of size 31 cm x 21 cm. - This kit needs 2 AA batteries. Those are not shipped with the product. You need to purchase them in local shop.