Advance Gsm Shutter Siren

     Sonrisa  GSM Shutter Siren Advance   * Alert up to 5 mobile numbers   via SMS & Call.   * Monitor Closing and Opening   times.   * Intolerable heavy-duty   sound    * System activate and Battery   Check message.   * Wireless Security System   * Disarmed via SMS and Call   * Rechargeable battery   operated      * 12-15 Days standby battery   backup    Charge with 5v - 2Amp charger   only