Sindoh M611 - Manual (Page 191)

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Settings and Changes of Each Function
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① Select On and press 【OK】.
② You can set it to use Wifi in the mobile devices.
SSID Setting
You can set printer names which are searched in the mobile devices.
1 Press【Menu】 when the machine is ready to print.
2 Press 【▲】 or 【▼】 until [Network Settings] appears, and then press 【OK】
3 Continue to operate it until [Wifi-Direct Settings] [SSID Setting] appears.
4 Enter SSID (a printer name) and then press [OK]