Use an Electronic Circuit in a Practical Way, Set-up the Room Alarm to Warn of Intrusion. Install the Alarm Inside the Door so it is Invisible to anyone Approaching from the outside. A Buzzer Sounds when the Door is Opened. Includes Electronic Circuitry Components to Build the Alarm. No tools required. For ages 8 years and up.

• Build your Own Room Alarm with this Self Contained Educational Project Kit and keep your room off-limits to Unwanted Invaders. Learn How a Simple Room Alarm Works.
• Simply attached to the wall and door using self-adhesive pads provided. The buzzer is activated when the door is opened Alerting you of Unwanted Intruders
• Solderless Connections and Simple, Clean Snap together Assembly. Powered using Safe Low Voltage Battery (not included)
• Ideal for any Inquisitive Mind aged 14 years and Over. Children should only use Under Competent Adult Supervision. Suitable for Schools and Other Educational Establishments as a Practical Teaching Aid

1. Datasheet - MX-610