$30 alarm sim card for 4g gsm home/business security alarm system speedtalk mobile majority of home/business security systems today uses cellular technology to remotely communicate with these system and devices. <p>if the <b>alarm system</b> was set-up to report activity via text messaging then users will be notified via text messages. another example, every time the system is arm/disarm, a text or voice call is transmitted remotely depending on how the system was set-up. <p><b><i>our service will only work within the united states. roaming is not supported in our plans. </b></i> <p>check coverage at our website <b>stkmap</b> <p> to activate please visit us at <b>activatespeedtalk</b> . <li>a new number is auto generated upon activation of service. <li>easy activation. sim is tri-cut, standard sim, micro sim and nano sim. just punch out the size you need for your wireless device. <li>nationwide lightning fast 4g lte service on gsm network.<br><br>after sim activation, it may take up to 24 hours for the gprs and data settings to sync and update with your device. make sure to turn on your device in an area with good reception. <br><br><i>please note: 2g & 3g services might not be available in all areas due to carrier decommissioning/shutdown of these frequencies, speedtalk mobile recommends using 4g or newer devices for better service. existing speedtalk customers who are using the service on their 2g or 3g devices, can continue to purchase speedtalk products to refill/reup their existing accounts.</i><br><br><br>speedtalk mobile offers its services through subscription plans which auto-renew every 30 days. plan begins as soon as you activate your service. you’ll be charged the rate stated at the time of purchase, every month, until you cancel. there is no contract, cancellations can be made any time by contacting customer support. a valid credit card is required to cover overages in case you exceed the applicable voice, sms and data limits. to avoid overage charges, you should purchase the appropriate plan for your anticipated needs.