Build a burglar alarm and learn about electronics. Scare off uninvited guests with a tooting and blinking alarm! Contents and instructions in English. 2 AA 1.5 V batteries required (not included). Class 1 Led product.Content: Instruction booklet, siren cover, plastic cone, LED light, siren body, gear cover, motor, switch plate, metalplate, buzzer, resistor, spring connectors, base plate, plastic tag.