Serial UART Interface
It run LWIP
802.11 bgn
WIFI Direct (P2P),SOFT-AP
Built-in TCP/IP
Support three modes: AP, STA and AP+STA coexistence mode
UFL Antenna Connector
Berg Strip Connectable
Breadboard Compatible
Crystal: the oscillation frequency of 455.
Button: free height is less than 3mm, the force 200-350g, the life of more than 200 000.
Photo-detector and preamplifier in one package.
Internal filter for PCM frequency.
Improved shielding against EMI.Don’t forget to add CR2025 Battery
to your Cart as this remote does not come with a battery
1. 2.4GHz Dual-Mode WiFi + Bluetooth Development Board, 38PIN
2. Ultra-Low power consumption works perfectly with the IDE
3. Support LWIP protocol, Freertos
4. Support Three Modes: AP, STA, and AP+STA
5. ESP 32 is safe, reliable, and scalable to a variety of applications
2.4GHz applications
3.2dBi gain
Antenna Connector: SMA Male.
360º Rotation and tilt capabilities
Omni-directional radiation.
Antenna Type: Whip, Tilt.
Max Height of Antenna: 14 cm
Model: ESP WROOM 32 MCU
Processor: Single or Dual core Tensilica Xtensa 32-bit LX6
Operating voltage (v): 2.3 ~ 3.6
Operating current (mA): 80
Small volume, easily embedded to other products
Strong function with support LWIP Protocol, Freertos
Integrated 96 dB SNR stereo ADC and stereo DAC
Five bands hardware equalizer
Digital equalizer for stereo line in
Hardware accelerator for low power
Full duplex hands-free speakerphone
Up to 250 mA charge controller
The computer can give early computer debugging USB module power supply, a very large amount of data under the condition of the recommended current more than 1A. Standby dozens of MA data can be set to provide dormancy, dormancy of 10MA low power. Support 2, mobile phone 3,4G card.
The serial port circuit: support for 3.3V single chip microcomputer. TTL serial port support 3.3 and 5V single chip microcomputer.
The SIM card circuit to increase the SMF05C ESD chip.
Antenna circuit: guarantee short and straight, so as to ensure the signal strength.
PCB display screen printing mark: each interface, convenient development two times, the SIM900/A hardware is completely follow the design when the design manual.
Two power supply interface: VCC5, 5V DC above 1A. Computer 5V power supply can be early computer USB. DC long data circuit over larger recommended 5V1A. VCC4, 3.5–4.5V power supply, ibid., suitable for lithium battery.
Control pin all leads.
A TTL level, compatible with 3.3V and 5V.
The two antenna interface, the default SMA straight head, connector for IPXmini antenna.
One way of speech interface, the way Mike interface.