MIFARE522 RFID Card Reader Module - Green A/V Adapters & Converters 1 * MQ-7 Gas Sensor

1 * MQ-7 Gas Sensor Module

1 x Bluetooth serial backplane

Format Supported MIDIMP3AAC ARM AWB WAV FLAC

Unit Working Temperature -10 +70 DX

4GHz / 5GHz) SIM Card Type Nano SIM SIM Card Quantity 2 Network Standby Dual Network Standby GPS Yes

MIFARE522 RFID Card Reader Module - Green A/V Adapters & Converters 1 * MQ-7 Gas SensorBrand N A Model V88 Quantity 1 Color Green Material PCB + ABS + iron Features It has CPU to control, high compatibility, simple, equip with instruction and software, with USB TTL RS232 TTL IC card Specification It has CPU to control, no need to write protocol code; Parallel port control, seamless match to any system, compatible with parallel port (51ARMLinuxArduinoWindows); This RFID card reader module port is UART TTL, if your device port is not this