diff --git a/src/main/java/com/ycwl/basic/mapper/ExtraDeviceMapper.java b/src/main/java/com/ycwl/basic/mapper/ExtraDeviceMapper.java
new file mode 100644
index 0000000..59cc2e3
--- /dev/null
+++ b/src/main/java/com/ycwl/basic/mapper/ExtraDeviceMapper.java
@@ -0,0 +1,11 @@
+package com.ycwl.basic.mapper;
+
+import com.ycwl.basic.model.pc.device.resp.DeviceRespVO;
+import org.apache.ibatis.annotations.Mapper;
+
+import java.util.List;
+
+@Mapper
+public interface ExtraDeviceMapper {
+    List<DeviceRespVO> listExtraDeviceByScenicId(Long scenicId);
+}
diff --git a/src/main/java/com/ycwl/basic/service/mobile/impl/AppScenicServiceImpl.java b/src/main/java/com/ycwl/basic/service/mobile/impl/AppScenicServiceImpl.java
index 5e4b310..85942d3 100644
--- a/src/main/java/com/ycwl/basic/service/mobile/impl/AppScenicServiceImpl.java
+++ b/src/main/java/com/ycwl/basic/service/mobile/impl/AppScenicServiceImpl.java
@@ -22,7 +22,9 @@ import com.ycwl.basic.service.pc.ScenicAccountService;
 import com.ycwl.basic.utils.ApiResponse;
 import com.ycwl.basic.utils.JwtTokenUtil;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.stereotype.Service;
 
 import java.math.BigDecimal;
@@ -51,6 +53,10 @@ public class AppScenicServiceImpl implements AppScenicService {
     private ScenicAccountService scenicAccountService;
     @Autowired
     private DeviceRepository deviceRepository;
+    @Autowired
+    private ExtraDeviceMapper extraDeviceMapper;
+    @Autowired
+    private RedisTemplate<String, String> redisTemplate;
 
     @Override
     public ApiResponse<PageInfo<ScenicAppVO>> pageQuery(ScenicReqQuery scenicReqQuery) {
@@ -126,6 +132,24 @@ public class AppScenicServiceImpl implements AppScenicService {
                 deviceRespVO.setUpdateAt(null);
             }
         }
+        List<DeviceRespVO> extraDeviceList = extraDeviceMapper.listExtraDeviceByScenicId(scenicId);
+        for (DeviceRespVO deviceRespVO : extraDeviceList) {
+            if (redisTemplate.hasKey("ext_device:online:"+deviceRespVO.getNo())) {
+                String onlineTs = redisTemplate.opsForValue().get("ext_device:online:"+deviceRespVO.getNo());
+                if (!StringUtils.isNumeric(onlineTs)) {
+                    deviceRespVO.setOnline(0);
+                    continue;
+                }
+                Long ts = Long.parseLong(onlineTs);
+                Date keepaliveAt = new Date(ts*1000);
+                deviceRespVO.setUpdateAt(keepaliveAt);
+                deviceRespVO.setKeepaliveAt(keepaliveAt);
+                deviceRespVO.setOnline(keepaliveAt.getTime() > System.currentTimeMillis()-1000*60*5 ? 1 : 0);
+            } else {
+                deviceRespVO.setOnline(0);
+            }
+        }
+        deviceRespVOList.addAll(0, extraDeviceList);
         return ApiResponse.success(deviceRespVOList);
     }
 }
diff --git a/src/main/java/com/ycwl/basic/task/N9eSyncTask.java b/src/main/java/com/ycwl/basic/task/N9eSyncTask.java
new file mode 100644
index 0000000..ff15bb4
--- /dev/null
+++ b/src/main/java/com/ycwl/basic/task/N9eSyncTask.java
@@ -0,0 +1,70 @@
+package com.ycwl.basic.task;
+
+import cn.hutool.core.codec.Base64;
+import cn.hutool.core.date.LocalDateTimeUtil;
+import cn.hutool.http.HttpUtil;
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONArray;
+import com.alibaba.fastjson.JSONObject;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.scheduling.annotation.EnableScheduling;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import cn.hutool.http.HttpResponse;
+
+import java.util.Date;
+import java.util.concurrent.TimeUnit;
+
+
+@Slf4j
+@Component
+@EnableScheduling
+public class N9eSyncTask {
+    @Autowired
+    private RedisTemplate<String, String> redisTemplate;
+
+    @Scheduled(fixedRate = 1000 * 60L)
+    public void syncN9e() {
+        // 构建Basic认证头
+        String auth = "Basic " + Base64.encode("user001:ccc26da7b9aba533cbb263a36c07dcc4");
+
+        // 构建请求体
+        JSONObject requestBody = new JSONObject();
+        JSONArray queries = new JSONArray();
+        JSONObject query = new JSONObject();
+        query.put("key", "group_ids");
+        query.put("op", "==");
+        JSONArray values = new JSONArray();
+        values.add(4);
+        query.put("values", values);
+        queries.add(query);
+        requestBody.put("queries", queries);
+
+        // 发送POST请求
+        HttpResponse response = HttpUtil.createPost("https://n9e.jerryyan.top/v1/n9e/target/list")
+                .header("Authorization", auth)
+                .header("Content-Type", "application/json")
+                .body(requestBody.toJSONString())
+                .execute();
+        JSONObject respData = JSON.parseObject(response.body());
+        if (StringUtils.isNotBlank(respData.getString("err"))) {
+            log.warn("N9E信息获取失败");
+            return;
+        }
+        JSONObject data = respData.getJSONObject("dat");
+        if (data.getInteger("total") <= 0) {
+            log.warn("N9E信息为空");
+            return;
+        }
+        JSONArray list = data.getJSONArray("list");
+        list.forEach(item -> {
+            JSONObject itemObj = (JSONObject) item;
+            String ident = itemObj.getString("ident");
+            Long updateAt = itemObj.getLong("update_at");
+            redisTemplate.opsForValue().set("ext_device:online:" + ident, updateAt.toString(), 1, TimeUnit.DAYS);
+        });
+    }
+}
diff --git a/src/main/resources/mapper/ExtraDeviceMapper.xml b/src/main/resources/mapper/ExtraDeviceMapper.xml
new file mode 100644
index 0000000..c892440
--- /dev/null
+++ b/src/main/resources/mapper/ExtraDeviceMapper.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
+<mapper namespace="com.ycwl.basic.mapper.ExtraDeviceMapper">
+    <select id="listExtraDeviceByScenicId" resultType="com.ycwl.basic.model.pc.device.resp.DeviceRespVO">
+        select d.id, d.ident as no, d.scenic_id, d.name, d.status, s.name as scenic_name
+        from extra_device d
+                 left join scenic s on d.scenic_id = s.id
+        where d.scenic_id = #{scenicId}
+          and d.status = 1
+    </select>
+</mapper>
\ No newline at end of file