IR Light Barrier

• Audible (85dB) and visible (LED) alert
• Range: 3.3ft to 13ft
• On/off switch provided
• Power supply: Transmitter: 9V DC / 50mA max. Receiver: 9V DC / 20mA max.
• Not recommended for outdoor use

Applications : announce visitors, warn against burglars, set boundaries, for science projects. 9V battery holder and adapter jack included.
Dimensions: Transmitter: 2.2" x 1.6". Receiver: 3.9" x 2.0"