Chaney C6735 SMD LIGHT SENTRY ALARM KIT
Tiny SMD kit can be hidden in any dark place-closet, desk drawer, briefcase, etc. The moment it senses light it emits a high pitched tone and it continues to scream until you return it to a dark place. The SMD Light Sentry Alarm Kit is fun to build and use! Operates from 9V battery (not included). Size of board only 1 5/8" x 1 7/16". Complete with all parts, PC board and instructions. Skill Level 2. This kit requires soldering of components to the PC board while building.