ESP8266 ESP01s upgrade version dari ESP01 -Wireless Standard:802.11b/g/n -Frequency Range:2.4GHz-2.5GHz(2400M-2483.5M) -Data Interface:UART/HSPI/I2C/I2S/Ir Remote Control/GPIO/PWM -Operating Voltage:3.0-3.6V(We recommended 3.3V) -Operating Current:Average 80mA -Operating Temperature:-40~125 -Wireless Network Mode:station/softAP/SoftAP+station -Safety Mode:WPA/WPA2 -Encryption Type:WEP/TKIP/AES -Network Protocol:IPV4,TCP/UDP/HTTP/FTP Perbedaan dengan ESP01 biasa : -Hanya memiliki 1 led (biru) di Pin 2 -Tidak perlu melakuakn jumper pin CH_PD ke 3.3V saat Booting/Run Flash program Jadi cukup sambung pin Vcc dan Gnd saja bisa langsung Booting dan Run -Terdapat Silkscreen/label pin di GPIO