ab CHF 4.90

Features: * brand new and high quality * Made of high quality material,  and practical to use * Sensor Module Board for Arduino Receiver Transmitter Non-Modulator Tube * The advanced relay module does not work without irradiation * When the is irradiated to the front, the high-level relay module works * When the shines on the back, the advanced relay module can also work * KY-008 650nm 5V red sensor transmitter module dot diode for Arduino * PCB Size: 1.52 * 2.22cm(Approx.) * Working Voltage: 5V * Light Source Wavelength: 650 nm(Approx.) * Output: Output high level when receiving signal; Output low level when not receiving signal. * Note: This sensor is not received by the modulator, please test in a room without sunlight