Solvline Eddy Serial v2.5.1.1 - Manual (Page 25)

Eddy User's Guide
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3.5 Eddy-S4M-JIG v2.1
It is test board which used when you test with Eddy-S4M v2.1
3.6 Eddy WiFi v2.1
Linking to Eddy-CPU and Eddy-S4M, Eddy-WiFi module enables to use various types of serial device (Security
equipment, telecommunications device, modem, data output devices, industrial instruments etc.) through
wireless LAN. Eddy-WiFi module supports IEEE 802.11b/g.
For application development, please refer to WiFi.c, the source code for Eddy-WiFi module.