Ready-Made Rain & Water Tank Overflow Alarm – Cardboard Base

A complete, pre-assembled and ready-to-use rain and water tank overflow alarm project on a cardboard base (31 x 21 cm).

Why you'll love it

• 100% working, handmade model – ready for demonstration
• Comes with printed notes with brief theory and a circuit diagram

Perfect for

School or college physics projects, classroom teaching and science fairs or exhibitions.

Please note: The kit needs 2 AA batteries, which are not included.