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sound level demos
and repeatable positioning projects
You can also compare it with DFRobot Relay Module V3
20uA when disabled (power and low batt LED are off)
RFID Card 125kHz EM4100 10pcs - Compatible Tags wav player sound level demosThis is a proximity identification token of 125Khz, EM4100. You can use it with the 125K RFID reader module, often used for electronic locks or customer identification. SPECIFICATION Frequency: 125K Dimension: 85. 5mm x 54mm x 1mm
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