diff --git a/app.js b/app.js
index 521bff2..4643bfc 100644
--- a/app.js
+++ b/app.js
@@ -54,6 +54,10 @@ app.get(['/admin', '/admin/*'], (req, res) => {
     res.sendFile(path.resolve(__dirname, 'views', 'admin.html'));
 });
 
+app.get('/camevent', (req, res) => {
+    res.send(0);
+})
+
 app.get('/servcmd', (req, res) => {
     res.send({ status: `exit time ${Date.now()}` });
     setTimeout(() => { process.exit(1) }, 2000);
diff --git a/config.json b/config.json
index bc936bd..8deb913 100644
--- a/config.json
+++ b/config.json
@@ -4,7 +4,8 @@
     },
     "uni_token": "webiounitoken",
     "perpage": 10,
-    "leone_limie": 40,
+    "leone_limit": 40,
+    "ipcam_limit": 4,
     "db": {
         "user": "root",
         "pass": "16055536",
@@ -46,6 +47,7 @@
         "iocmd": "/home/www/cmd/cmdio",
         "leonert": "/home/www/tmp/rtles",
         "htsrt": "/home/www/tmp/rthts",
-        "version": "/factory/webioa_version"
+        "version": "/factory/webioa_version",
+        "ipcamsave": "/home/www/cam"
     }
 }
\ No newline at end of file
diff --git a/includes/language/zh.json b/includes/language/zh.json
index 0d681d7..95145e2 100644
--- a/includes/language/zh.json
+++ b/includes/language/zh.json
@@ -69,6 +69,7 @@
     "ERR0067": "型號輸入錯誤",
     "ERR0068": "事件數量輸入錯誤",
     "ERR0069": "圖片數量輸入錯誤",
+    "ERR0070": "IPCam 裝置已達上限",
 
     "ERR7000": "命令執行失敗",
 
diff --git a/route/api/ipcam.js b/route/api/ipcam.js
index 0279cde..71ef67b 100644
--- a/route/api/ipcam.js
+++ b/route/api/ipcam.js
@@ -55,26 +55,69 @@ router
 
         let active = arr.data.active == 1 ? 1 : 0;
 
-        let query = "select count(*) as c from ??.?? where `ip` = ?";
-        let param = [config.db.db1, 'jcioccamset', arr.data.ip];
-        res.db.query(query, param, (err, row) => {
-            if (err || row.length == 0) return rt.err(res, err, n, 'ERR8000');
+        !async function runSync() {
+            // data flag 0 is insert, 1 is update
+            let flag = 0;
+            let idx = 1;
+            // query db data 
+            try {
+                let query = "select `uid` from ??.?? order by `uid` desc limit 1";
+                let param = [config.db.db1, 'jcioccamset'];
+                let id = await tool.promiseQuery(res, query, param);
 
-            if (row[0].c >= 1) return n('ERR0027');
-
-            let query = "insert into ??.?? (`ip`, `name`, `model`, `maxevents`, `maximg`, `active`, `cuser`, `muser`, `ctime`, `mtime` ) \
-                values (?, ?, ?, ?, ?, ?, ?, ?, unix_timestamp(), unix_timestamp())";
-            let param = [config.db.db1, 'jcioccamset', arr.data.ip, arr.data.name, arr.data.model, arr.data.maxevents, arr.data.maximg, active, u, u];
-
-            res.db.query(query, param, (err, row) => {
-                if (err) return rt.err(res, err, n, 'ERR8001');
-
-                res.api_res = {
-                    record: []
+                if (id.data.length > 0 && id.data[0].uid) idx = id.data[0].uid + 1;
+                if (idx > config.ipcam_limit) {
+                    query = "select `uid` from ??.?? where `delete` = 1 limit 1";
+                    flag = 1;
+                    let id = await tool.promiseQuery(res, query, param);
+                    if (id.data.length > 0 && id.data[0].uid) idx = id.data[0].uid;
+                    else return n('ERR0070');
                 }
-                n();
-            })
-        })
+
+                query = "select count(*) as c from ??.?? where `ip` = ?";
+                param = [config.db.db1, 'jcioccamset', arr.data.ip];
+                let count = await tool.promiseQuery(res, query, param);
+                if (count.data.length == 0) return n('ERR8000');
+                if (count.data[0].c >= 1) return n('ERR0027');
+            } catch (e) {
+                return rt.err(res, e, n, 'ERR8000');
+            }
+            if (flag == 1) {
+                try {
+                    let query = "update ??.?? set \
+                        `ip` = ?, \
+                        `name` = ?, \
+                        `model` = ?, \
+                        `maxevents` = ?, \
+                        `maximg` = ?, \
+                        `active` = ?, \
+                        `delete` = 0, \
+                        `muser` = ?, \
+                        `mtime` = unix_timestamp() \
+                        where \
+                        `uid` = ?";
+                    let param = [config.db.db1, 'jcioccamset', arr.data.ip, arr.data.name, arr.data.model, arr.data.maxevents, arr.data.maximg, active, u, arr.data.id];
+                    await tool.promiseQuery(res, query, param);
+                } catch (e) {
+                    return rt.err(res, e, n, 'ERR8002');
+                }
+            } else {
+                try {
+                    let query = "insert into ??.?? (`uid`, `ip`, `name`, `model`, `maxevents`, `maximg`, `active`, `cuser`, `muser`, `ctime`, `mtime` ) \
+                        values (?, ?, ?, ?, ?, ?, ?, ?, ?, unix_timestamp(), unix_timestamp())";
+                    let param = [config.db.db1, 'jcioccamset', idx, arr.data.ip, arr.data.name, arr.data.model, arr.data.maxevents, arr.data.maximg, active, u, u];
+                    await tool.promiseQuery(res, query, param);
+                } catch (e) {
+                    return rt.err(res, e, n, 'ERR8001');
+                }
+            }
+
+            res.api_res = {
+                record: []
+            }
+            return n();
+        }()
+
     })
     .post('/editipcam', (req, res, n) => {
         if (!config.permission.ipcam) return n('ERR9000');