Weidmuller IE-GPRS-I/O - Manual (Page 5)

Power Supply
The IE-GPRS-IO can be supplied with either 10 to 36 V DC or 8 to 24 V AC. Power input is approx.
10 W.
Electrical voltage
Connection to the electrical supply system must be carried out by a qualified
electrician.
Power must be supplied via a power supply unit in accordance with DIN EN 60
742 (VDE 0551)
The mains supply side must be fused.
Use only the cables supplied to connect up the device.
On the bottom rear end a connection to functional earth is recommended.
This connection is recommended by a 4 mm² cable with a 6.3 female spade
terminal, the IE-GPRS-IO has the male spade terminal.