LED 5mm 940nm IR Infrared Receiving Diode / Black Light Receiver Diode Deskripsi: 5mm 940nm IR Detector Sensor Infrared 5mm Phototransistor IR Transmitter LED Lamp Emitted Color : IR Wavelength : 940 nm Lens color : water clear Item : Infrared Phototransistor Transmitter Size : Approx. 5 mm