GSM Modem SR2MOD02 is pre-configured to be used with SR2/SR3 Zelio Logic Smart Relays with clock function.

GSM Modem SR2MOD03 is pre-configured to be used with Twido Controllers.However,there is no restriction to use these
GSM Modems with other process application controllers.

Refer to attached file for user manual of GSM Modems SR2MOD02 AND SR2MOD03 including the AT commands.