manufacturer: Alga Alga Motion motion Sensor Price 12,50 € Price without tax9,96 € Quantity Add to cart Add to compare Add to Wishlist All Alga productsFree shipping on orders over 99 €Free order pick up from shop from Lappeenranta Detailed description An exciting motion sensor keeps intruders away! Build the Alga Science Motion Sensor and learn how motion triggers an alarm. Instructions in Finnish. For over 8 years old.