Product Descriptions
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.
Product Specifications
| Categories | Items | Specifications |
| Certification | RF certification | See certificates from ESP-WROOM-02D and ESPWROOM-02U |
| Green certification | RoHS, REACH | |
| Test | Reliablity | HTOL/HTSL/uHAST/TCT/ESD |
| Wi-Fi | Wi-Fi protocols | 802.11 b/g/n |
| Frequency range | 2.4 GHz ~ 2.5 GHz (2400 MHz ~ 2483.5 MHz) | |
| Hardware | Peripheral interface | UART/HSPI/I2C/I2S/IR Remote Control |
| GPIO/PWM | ||
| Operating voltage | 2.7 V ~ 3.6 V | |
| Operating current | Average: 80 mA | |
| Minimum current delivered by power supply | 500 mA | |
| External interface | - | |
| Moisture sensitivity level | Level 3 | |
| Software | 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 |
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