laki: 2.5×2.5cm Power supply: 2.7~5V@30mA Dalas ng trabaho: 125KHz Support chip: ATA5557, T5567, T5577 o katugmang chip (default na format Manchester code RF / 32) interface: serial port (TTL-232 format) basahin ang distansya: <7cm, write distance: <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.)