Description
Strategically place the infrared light barrier to alert you when someone is nearby. This kit consists of two parts: an infrared transmitter and a receiver. As long as the receiver can detect the infrared beam sent from the transmitter, nothing will happen. But as soon as the signal is obstructed, an alarm will sound. For example, place both pieces on either side of your bedroom door. The buzzer will sound the alarm when your parents or other unwanted intruders try to enter. There are many possible applications: announcing visitors, warning against burglars, setting boundaries, conducting science projects... The generated beam reaches up to 4 m away. When the beam is interrupted, the buzzer emits an 85 dB alarm and an LED indicator lights up. The receiver is powered by a standard 9 V battery (not included). The transmitter is equipped with a DC socket (9 V / 20 mA). Caution: Suitable for indoor use only.