SIM CARD: Demands a devoted information sim for the SMS messages,set it from the rear slot of the principle alarm box.can include 6 teams preset alarm telephone number and 3 groups sms cell phone number The procedure also features a developed-in lithium rechargeable battery to make certain continual operation even https://www.firesense.co.uk/type/conventional-fire-system/conventional-fire-alarm-control-panels/