... GSM/PSTN alarm panel with 2wired output which uses the SMS to control the wired outputthis SN2301GSM/PSTN alarm system with all same ... assistance siren on/off11. Siren could be set to sound when away arming12. When using our pir, ceiling mount pir, directional pir ... , speak, arm, disarm, or turn on/off the siren from a remote phoneThe functions are the same as new sn2300, 5900 and 2200 ...