The Wireless Device Server � GSM enables you to connect Serial Devices to remote server over GSM GPRS network quickly & easily. WDS � GSM simplifies GSM GPRS Connectivity to devices in Applications where Mobility is required or Cabling is Impractical. Available as a Standalone Box Product for External connectivity. Enables any device to send SMS messages without having to learn and implement complicated AT command set. Can also be used as a simple GSM modem