Siemens SIMATIC NET SCALANCE W778-1 Operating Instructions Manual page 32

Mounting
4.4 Installation on a DIN rail
3. Press the device against the DIN rail
4. Connect the power supply, refer to the section "Power supply (Page 41)".
5. Fit the antennas, refer to the section "Antennas (Page 45)".
Uninstalling
1. Turn off the power to the device.
2. Disconnect all connected cables.
3. Pull the DIN rail slider down with a screwdriver
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until the DIN rail slider catch locks in place.
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Operating Instructions, 07/2019, C79000-G8976-C450-04
SCALANCE W778-1 /W738-1