diff --git a/apps/m9zCtrlTty/install.go b/apps/m9zCtrlTty/install.go
index 9e0c1d6..b452ad4 100644
--- a/apps/m9zCtrlTty/install.go
+++ b/apps/m9zCtrlTty/install.go
@@ -6,7 +6,7 @@ import (
 	"path/filepath"
 )
 
-func install() {
+func install() error {
 	kioskInfof("checking firefox usability")
 	// 1. 检查并修复 Firefox
 	if !isFirefoxUsable() {
@@ -15,7 +15,7 @@ func install() {
 		if err := installFirefox(); err != nil {
 			kioskErrorf("firefox install/repair failed err=%v", err)
 			fmt.Printf("install/repair Firefox failed: %v\n", err)
-			os.Exit(1)
+			return fmt.Errorf("install/repair Firefox failed: %w", err)
 		}
 		kioskInfof("firefox install/repair success")
 		fmt.Println("Firefox install/repair success")
@@ -29,7 +29,7 @@ func install() {
 	if err != nil {
 		kioskErrorf("read executable path failed err=%v", err)
 		fmt.Printf("读取应用路径失败: %v\n", err)
-		os.Exit(1)
+		return fmt.Errorf("read executable path failed: %w", err)
 	}
 
 	kioskInfof("current executable path=%s workdir=%s", appPath, filepath.Dir(appPath))
@@ -39,10 +39,11 @@ func install() {
 		if err := enableAutoStart(appPath); err != nil {
 			kioskErrorf("autostart setup failed service=%s err=%v", autoStartServiceFile(appPath), err)
 			fmt.Printf("设置开机自启动失败: %v\n", err)
-			os.Exit(1)
+			return fmt.Errorf("setup autostart failed: %w", err)
 		}
 		fmt.Println("开机自启动设置成功")
 	} else {
 		fmt.Println("已设置开机自启动")
 	}
+	return nil
 }
diff --git a/apps/m9zCtrlTty/m9zCtrlTty.go b/apps/m9zCtrlTty/m9zCtrlTty.go
index 30b3b1b..7a9cff5 100644
--- a/apps/m9zCtrlTty/m9zCtrlTty.go
+++ b/apps/m9zCtrlTty/m9zCtrlTty.go
@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"log"
+	"time"
 
 	"github.com/gogf/gf/v2/errors/gerror"
 	"github.com/towgo/towgo/errors/tcode"
@@ -84,11 +85,23 @@ func start() {
 		}
 	}
 
-	kioskInfof("install checks begin")
-	install()
-	kioskInfof("install checks done; starting firefox client goroutine port=%d", g.Config().Server.Port)
-	go runClient(g.Config().Server.Port)
+	kioskInfof("starting firefox client goroutine port=%d", g.Config().Server.Port)
+	go func(port int) {
+		time.Sleep(500 * time.Millisecond)
+		runClient(port)
+	}(g.Config().Server.Port)
+	go runStartupChecks()
 	core.RunServer()
 }
 
+func runStartupChecks() {
+	startedAt := time.Now()
+	kioskInfof("startup checks begin")
+	if err := install(); err != nil {
+		kioskErrorf("startup checks failed elapsed=%s err=%v", time.Since(startedAt).Round(time.Millisecond), err)
+		return
+	}
+	kioskInfof("startup checks done elapsed=%s", time.Since(startedAt).Round(time.Millisecond))
+}
+
 // TODO Build Cmd  CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -o m9zCtrlTty-arm64 .
diff --git a/internal/module/m9zTtyApi/read.go b/internal/module/m9zTtyApi/read.go
index 90bb41c..d95d1ec 100644
--- a/internal/module/m9zTtyApi/read.go
+++ b/internal/module/m9zTtyApi/read.go
@@ -141,6 +141,12 @@ type DeviceStatus struct {
 
 // 实时监控数据
 func getDeviceStatus2(rpc towgo.JsonRpcConnection) {
+	// 临时演示模式：原串口读取实现已保留在 getDeviceStatus2Real。
+	// getDeviceStatus2Real(rpc)
+	rpc.WriteResult(buildDemoDeviceStatus2())
+}
+
+func getDeviceStatus2Real(rpc towgo.JsonRpcConnection) {
 	cuid, _ := getDeviceId(rpc)
 
 	read, err := m9z.DeviceStatusRead(cuid)
@@ -193,6 +199,53 @@ func getDeviceStatus2(rpc towgo.JsonRpcConnection) {
 
 }
 
+func buildDemoDeviceStatus2() *DeviceStatus {
+	const loopCount = 10
+	d := &DeviceStatus{
+		ScanDeviceCount: loopCount,
+		Loops:           make([]DeviceStatusLoop, loopCount),
+	}
+	d.Mode = 0
+	d.DeviceTime = time.Now().UTC()
+	for i := 0; i < loopCount; i++ {
+		relayOpen := i%2 == 0
+		pwm := uint8(35 + i*5)
+		d.Relays[i] = relayOpen
+		d.PWMOutputs[i] = pwm
+
+		loop := DeviceStatusLoop{
+			Loop: m9z.Loop{
+				Index:  i,
+				Name:   fmt.Sprintf("#%d", i+1),
+				IsOpen: relayOpen,
+				Pwm:    int(pwm),
+			},
+			V: float32(218 + i*3),
+			A: float32(0.32 + float64(i)*0.08),
+		}
+		kw := float64(loop.V*loop.A) / 1000
+		loop.Kw = float32(math.Round(kw*1000) / 1000)
+
+		switch i {
+		case 0:
+			loop.Faults = m9z.BuildLoopFaults(uint(i+1), 0x01, "01 00")
+		case 1:
+			loop.Faults = m9z.BuildLoopFaults(uint(i+1), 0x02, "02 00")
+		case 6:
+			loop.Faults = m9z.BuildLoopFaults(uint(i+1), 0x04, "04 03")
+		case 8:
+			loop.Faults = m9z.BuildLoopFaults(uint(i+1), 0x03, "03 00")
+		}
+		loop.HasFault = len(loop.Faults) > 0
+		loop.FaultMsg = joinLoopFaultMessages(loop.Faults)
+		loop.FaultCode = joinLoopFaultCodes(loop.Faults)
+		d.Loops[i] = loop
+	}
+	d.Optocoupler[0] = true
+	d.Optocoupler[3] = true
+	return d
+}
+
 func joinLoopFaultMessages(faults []m9z.LoopFault) string {
 	messages := make([]string, 0, len(faults))
 	for _, fault := range faults {