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- The rugged plastic enclosure supports the following mounting options:
- S7-1500 mounting rail
- S7-300 mounting rail
- DIN rail mounting
- Wall mounting
- 2 x RJ45 interface (M874) or 4 x RJ45 interface (M876) with 10/100 Mbps for Industrial Ethernet
- Diagnostics LEDs for modem status, field strength, connection control, and DI/DO channels
- SET button
- 5-pin screw terminal for redundant connection to the 24 V DC power supply
- 2-pin screw terminal for one digital input
- 2-pin screw terminal for one digital output
- 1 x SMA antenna connection for one UMTS/GSM antenna (M874) or 2 x SMA antenna connections for two LTE/UMTS/GSM antennas for diversification (M876)
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