I looked up Knowles online and it seems to be a well-known company. I took a fancy to their ultrasonic microphone SPU0410LR5H. I looked up ultrasonic on the official website and found this model. I al
RT, I'm curious about the black glass face recognition attendance machines. What kind of sensors do they use to determine if there is someone in front of them? If the camera is turned on all day for f
Today I received a call from SF Express saying that a package had arrived. I asked them to leave it at Cainiao Supermarket. I went to pick it up after noon. Wow, it was huge! It was bigger than I imag
The prediction is for reference only. Whether it makes sense or not, just take it as a reference.power supply:
The charging and discharging power supply system is to first power the supercapacitor and
According to the working frequency, RFID can be divided into low frequency, high frequency, ultra-high frequency and microwave systems. Frequency refers to the working frequency of the relevant reader