[Product weight]:1.4±0.1g
[IC]:ESP8266
[Frequency]:2.4GHz
[Distance]:300m
[Interface]:UART/HSPI/I2C/I2S/IR Remote Control
[Introduction]:ESP-WROOM-02D and ESP-WROOM-02U are ESP8266EX-based modules developed by Espressif. Compared to ESP-WROOM-02, the RF performance of ESP-WROOM-02D and ESP-WROOM-02U are optimized. Besides, ESP-WROOM-02U integrates a U.FL connector. Please see Chapter 8 for details of U.FL connector.
WiFi | Specifications |
RF certification |
SRRC, FCC, CE (RED), IC, NCC, KCC, TELEC (MIC) |
Wi-Fi protocols |
802.11 b/g/n |
Frequency range | 2.4GHz~2.5GHz(2400M~2483.5M) |
Hardware | Specifications |
Peripheral interface |
UART/HSPI/I2C/I2S/IR Remote Control GPIO/PWM |
Operating voltage |
2.7V ~ 3.6V |
Operating current |
Average: 80 mA |
Minimum current delivered by power supply |
500 mA |
Operating temperature range |
-40℃ ~ +85℃ |
Storage temperature |
-40℃ ~ +85℃ |
Software | Specifications |
Wi-Fi mode | Station/SoftAP/SoftAP+Station |
Security |
WPA/WPA2 |
Encryption | WEP/TKIP/AES |
Firmware upgrade | UART Download/OTA (via network)/Download and write firmware via host |
Software development | Supports Cloud Server Development/SDK for custom firmware development |
Network protocols | IPv4、TCP/UDP/HTTP/FTP |
User configuration | AT Instruction Set, Cloud Server, Android/iOS app |