The Forces Energy and Motion set has been designed to encourage students to investigate and experiment using a variety of models . The hands on testing with various models and motors allows groups to compare and contrast...
160- motion detector - detection area approx 10m x 160- adjustable timer - between 5 seconds and 7 minutes switches on automatically upon entering the detection zone waterproof ip44 casing includes 24w energy saving bulb but will also take a 500w halogen bulb
Knex Forces, Energy and Motion Set on other UK sites
WhisperSense ENERGY STAR rated exhaust fans are super quiet, energy efficient and easy to install. All models also meet ASHRAE 62.2, the ventilation standard required by LEED for Homes, CA Title 24 and other green building standards. This single speed ventilation fan can be enabled by motion or humidity with variable sensitivity - the fan will run from 30 seconds to 1 hour after motion ceases, and