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+====== SDK Script scan-wlan.are ======
+<code c scan-wlan.are>
+/* DESC: This script can be used to switch the WLAN client network according to availability
+ * Copyright (C) 2013 NetModule AG, Switzerland
+ */
+IFC = "WLAN1";
+NETWORK = "";
+MIN_SIGNAL = -90;
+/* ATTENTION: Scanning for WLAN networks will tear down any running access-point */
+nets = nb_scan_networks(IFC);
+nr_nets = struct_get(nets, "NETWORK_COUNT");
+if (is_void(nr_nets) || nr_nets < 1) {
+    nb_syslog("no networks found on %s", IFC);
+    exit(0);
+}
+/* lookup WLAN networks */
+for (i = 1; i <= nr_nets; i++) {
+    k = sprintf("NETWORK%d_SSID", i);
+    ssid = struct_get(nets, k);
+    k = sprintf("NETWORK%d_SIGNAL", i);
+    signal = (int)struct_get(nets, k);
+    if (strlen(ssid) == 0) continue;
+    nb_syslog("detected %s network '%s' (signal %d)", IFC, ssid, signal);
+    if ((ssid == "home-network" || ssid == "office-network") && signal > MIN_SIGNAL) {
+        NETWORK = ssid;
+        break;
+    }
+}
+if (NETWORK != "") {
+    nb_syslog("activating %s network '%s'", IFC, NETWORK);
+    cfg = sprintf("wlan.0.client.0.ssid=%s", NETWORK);
+    nb_config_set(cfg);
+} else {
+    nb_syslog("no known networks found on %s", IFC);
+}
+exit(0);
+</code>