1. Module Datasheet

[WT8266-S1][Download link]

http://doc.8ms.xyz/attach_files/hardware-manual/2387

[WT8266-S2][Download link]

http://doc.8ms.xyz/attach_files/hardware-manual/2388

[WT8266-S3(ESP-07S)][Download link]

http://doc.8ms.xyz/attach_files/hardware-manual/2389

[WT8266-S5(ESP-12F)][Download link]

http://doc.8ms.xyz/attach_files/hardware-manual/2390

[WT8266-S6(ESP-12S)][Download link]

http://doc.8ms.xyz/attach_files/hardware-manual/2391

2. AT Instruction Set

[ESP8266 AT Instruction Set][Download link]

http://doc.8ms.xyz/attach_files/hardwaremanual/946

[ESP8266 AT Command Examples][Download link]

http://doc.8ms.xyz/attach_files/hardware-manual/1544