DIY, anda harus rakit sendiri. Hati2 membuka kemasan. komponen cap cukup kecil dan bisa kececer. - Isi paket lihat gambar untuk daftar komponen. - Tinggalkan email lewat chat/pm untuk pdf installation. Working voltage: 3~5V PCB size: 92 × 60mm Product weight: 17g About debugging: The machine is powered by 3 to 5V DC power. Turn on the power and turn on the power switch. At this time, the buzzer will sound. The LED is bright, slowly adjust the VR1 potentiometer, so that the buzzer just does not ring. To adjust the potentiometer to affect the detection distance, the detection distance of the machine is less than 6 cm, affected by the size of the detected object and the environment. Precautions: Confirm the component polarity and the mounting direction on the board in advance.