Just like the movies, you can protect your space with invisible lazer beams! When the line is crossed, warning alarms alert you to intruders while three lazer units form a perimeter that protects your top secret stuff!
This lazer trip set features LED indicators, an on/off button, an alarm speaker, as well as pivoting lazer beam receivers and senders.
Included in this set is one lazer receiver unit and two lazer transmitter units. This item requires six AAA batteries, which are not included.