... 850M/900M/1800M/1900M. 4,Support 8 channels, user can choose to insert wireless, FXO or FXS ... totally compatible with TDM400P’s driver—WCTDM, so user don’t need to understand much knowledge about ... of development. 2, GSM800 support 8 channels, user can choose to insert wireless, FXO or FXS module ... H): 260*105*24MM 2, Weight: 500gThe environmental instructions for using: 1, Temperature Operation: 0 to 80 ...