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- Supply Voltage (V): 3.4 ~ 12
- GSM (MHz): 850, 900, 1800 and 1900
- Flash Memory (MB): 24
- RAM Memory (MB): 32
- Chipset :ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor
- FLASH: QSPI flash 4MB / PSRAM 8MB
- SRAM:520 kB SRAM
- Button: Reset
- USB to TTL: CP2104
- Modular interface: UART,SPI,SDIO,I2C,PWM,TV PWM,I2S,IRGPIO
- On-board clock:40MHz crystal oscillator
- Working voltage:2.7V-3.6V
- Range in open space: 30 Meters
- RX IF Frequency: 1MHz
- Very Stable Operating Frequency
- Low Current Consumption (Typ 11mA)
- Wide Operating Voltage (1.5-5v)
- Operating voltage: 5V.
- Quiescent Current: 4mA.
- Receiving frequency: 433 MHz.
- Receiver sensitivity: -105 dB.
- Communication Distance (m): 20 ~ 200 meter.
- Frequency: 125Khz.
- Support μEM4001, 4100, or its compatible RFID, ID card.
- Read first 10 digits of the RFID/Proximity card.
- Support Windows95/98/2000/XP/7/8.
- Plug and Play
- Reliable working condition
- Powered directly from USB, no need external power supply
- Driver Chip: MAX7219
- Input Voltage: 3.7 to 5.3 V
- Input Current: 320 mA
- Display Dimensions: 32x32x6 (LxWxH) mm
- PCD Dimensions: 50×32 (LxW) mm
- Driver Chip: MAX7219
- Input Voltage: 3.7 to 5.3 V
- Input Current: 320 mA
- Display Dimensions: 32x32x6 (LxWxH) mm
- PCB Dimensions: 128×32 (LxW) mm
- Operating Voltage: 5 V
- Sonar Sensing Range: 2-400 cm
- Max. Sensing Range: 4500 cm
- Frequency: 40 KHz
- Thickness: 2.8-3.1 mm
- The diameter of mounting hole: 3.8mm
- Mounting Bracket Material: acrylic
- Power supply: DC 6.5-16v and USB 5V
- GVS output power supply: 5V or 3.3V
- No. Of Pins: 30PIN
- Processor Count: 2
- Power: 5V or 3.5–4.5V
- Supports 2G, 3G, 4G SIM cards
- TTL serial port (3.3V/5V)
- SMA antenna interface
- Flip SIM slot
- ESD protection
- AT command support
- Ideal for IoT & GPS tracking
- Onboard Mature and stable ESP-12F WiFi module, high capacity 4M Byte Flash
- The I/O port of the WiFi module and the UART program download port are all extracted, convenient secondary development
- Onboard AC-DC switch power module, supply power way support AC90-250V/DC7-12V/USB5V
- Onboard Wifi module RST reset button
- 1MB (8Mbit) Flash size.
- Very competitive price
- AP, STA, AP+STA modes available.
- Very simple AT commands, easy to use.
- Internal LWIP interface.

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