Lahí: 2.5×2.5cm Power supply: 2.7~5V@30mA Work frequency: 125KHz Support chip: ATA5557, T5567, T5577 pe fenapasi mo e ngaahi pinati (peesi tuʻumaʻu ʻo e kouti ʻo Manisesitaa RF/32) Meʻa ʻoku: fakahokohoko ʻo e Pooti (Founga TTL-232) Lau ʻa e mamaʻo: <7cm, tohiʻi e mamaʻo: <6cm (T5557, T5567, T5577 Chip R/W Module has read-only and read-write two models, according to the project needs to choose the right module.)