Single Translucent Tray with Lid includes:5 x Battery Cell modules (Short Circuit protected), 5 x Bulb modules (series & parallel investigations), 2 x Toggle switch modules, 2 x Push switch modules, 2 x Buzzer modules, 2 x Motor modules (Solar type Low enertia), 10 x Stackable test leads, 2 x Crocodile adaptor clips (for insulators & conductors experiments). Downloadable teaching guide available. Beginners Kit also available with magnetic backed modules, enabling teachers to be able to perform circuits vertically on a magnetic whiteboard (Code 80886).