SIM868 ......\SIM800 Series_AT Command Manual_V1.10.pdf ......\SIM868 Footprint锛?60310锛?PDF ......\SIM868 Pin out锛?60120锛?pdf ......\SIM868 Reference Design_V1.01(160310).pdf ......\SIM868_Hardware_Design_V1.00.pdf ......\SIM868_SPEC EN(160520).pdf