diff --git a/HVGUI.py b/HVGUI.py
index ff7124c..e8a6037 100755
--- a/HVGUI.py
+++ b/HVGUI.py
@@ -2,8 +2,200 @@
 
 import HVLibrary as hv
 
+import sys
+
 from PyQt6.QtWidgets import QApplication, QMainWindow, QPushButton, QCheckBox, QLineEdit, QLabel, QVBoxLayout, QWidget, QTabWidget, QGridLayout, QMessageBox, QFileDialog, QProgressBar
 from PyQt6.QtCore import Qt, QThread, QTimer, QObject, pyqtSignal
 from functools import partial
 
+ColStrList = ["Name", "Ch", 'On/Off', "Set V [V]", "Set I [uA]", "Out V [V]", "Out I [uA]"]
 
+nMod = 2
+nChPerMod = [48, 48]
+updateTime = 3 #sec
+
+bd = []
+for k in range(nMod):
+  bd.append(hv.Board(3 + k))
+
+
+V0SetList = []
+I0SetList = []
+OnOffList = []
+outVList = []
+outIList = []
+
+for k in range(nMod):
+  V0SetList.append(bd[k].GetPV('V0Set'))
+  I0SetList.append(bd[k].GetPV('I0Set'))
+  OnOffList.append(bd[k].GetPV('Pw'))
+  outVList.append(bd[k].GetPV('VMon'))
+  outIList.append(bd[k].GetPV('IMon'))
+
+class MyWindow(QMainWindow):
+  def __init__(self):
+    super().__init__()
+
+    self.setWindowTitle("Iseg Controller")
+    self.setGeometry(100, 100, 500, 200)
+  
+    widget = QWidget()
+    layout = QVBoxLayout()
+    widget.setLayout(layout)
+    self.setCentralWidget(widget)
+
+    self.txtName = [[QLineEdit() for _ in range(rows)] for rows in nChPerMod]
+    self.txtV = [[QLineEdit() for _ in range(rows)] for rows in nChPerMod]
+    self.txtI = [[QLineEdit() for _ in range(rows)] for rows in nChPerMod]
+    self.txtVOut = [[QLineEdit() for _ in range(rows)] for rows in nChPerMod]
+    self.txtIOut = [[QLineEdit() for _ in range(rows)] for rows in nChPerMod]
+    self.chkON = [[QCheckBox() for _ in range(rows)] for rows in nChPerMod]
+
+    self.timer = QTimer(self)
+    self.timer.timeout.connect(self.updateTimer)
+    self.timer.start(updateTime*1000)
+    self.time = 0
+
+    #=========== set tab
+    self.tabWidget = QTabWidget(self)
+    layout.addWidget(self.tabWidget)
+
+    for k in range(0, nMod):
+      tab = QWidget(self)
+      layout_tab = QGridLayout()
+      layout_tab.setAlignment(Qt.AlignmentFlag.AlignTop)
+      tab.setLayout(layout_tab)
+
+      for index, lb in enumerate(ColStrList):
+        qlb = QLabel(lb, tab)
+        layout_tab.addWidget(qlb, 0, index)
+
+      for i in range(nChPerMod[k]) :
+        for j, lb in enumerate(ColStrList) : 
+          #------------ name
+          if j == 0:
+            layout_tab.addWidget(self.txtName[k][i], 1+i, j)
+          
+          #------------ Ch
+          if j == 1:
+            qlb = QLabel(str(i), tab)
+            layout_tab.addWidget(qlb, 1+i, j, alignment=Qt.AlignmentFlag.AlignCenter)
+          
+          #------------ On/Off
+          if j == 2:
+            self.chkON[k][i].setChecked( OnOffList[k][i] == 1)            
+            layout_tab.addWidget(self.chkON[k][i], 1+i, j, alignment=Qt.AlignmentFlag.AlignCenter)
+          
+            self.chkON[k][i].clicked.connect(partial(self.SetOnOff, k, i))
+
+          # #------------ V set
+          if j == 3:
+            self.txtV[k][i].setText(str(V0SetList[k][i]))
+            self.txtV[k][i].setAlignment(Qt.AlignmentFlag.AlignRight)
+            layout_tab.addWidget(self.txtV[k][i], 1+i, j)
+
+            self.txtV[k][i].returnPressed.connect(partial(self.SetHV, k, i) )
+            self.txtV[k][i].returnPressed.connect(partial(self.UnSetTextColor, self.txtV[k][i]))
+            self.txtV[k][i].textChanged.connect(partial(self.TextChange, self.txtV[k][i]))
+            
+          # #------------ I set
+          if j == 4:
+            self.txtI[k][i].setText(str(I0SetList[k][i]))
+            self.txtI[k][i].setAlignment(Qt.AlignmentFlag.AlignRight)
+            layout_tab.addWidget(self.txtI[k][i], 1+i, j)
+          
+            self.txtI[k][i].returnPressed.connect(partial(self.SetI, k, i) )
+            self.txtI[k][i].returnPressed.connect(partial(self.UnSetTextColor, self.txtI[k][i]))
+            self.txtI[k][i].textChanged.connect(partial(self.TextChange, self.txtI[k][i]))
+
+          # #------------ V out
+          if j == 5:
+            self.txtVOut[k][i].setText("{:.2f}".format(outVList[k][i]))
+            self.txtVOut[k][i].setAlignment(Qt.AlignmentFlag.AlignRight)
+            layout_tab.addWidget(self.txtVOut[k][i], 1+i, j)
+            self.txtVOut[k][i].setReadOnly(True)
+            self.txtVOut[k][i].setStyleSheet("background-color: lightgrey; color: black;")
+          
+          # #------------ I out
+          if j == 6:
+            self.txtIOut[k][i].setText("{:.2f}".format(outIList[k][i]))
+            self.txtIOut[k][i].setAlignment(Qt.AlignmentFlag.AlignRight)
+            layout_tab.addWidget(self.txtIOut[k][i], 1+i, j)
+            self.txtIOut[k][i].setReadOnly(True)
+            self.txtIOut[k][i].setStyleSheet("background-color: lightgrey; color: black;")
+
+      self.tabWidget.addTab(tab, "Mod-" + str(k))
+
+
+  #=================================
+  def UnSetTextColor(self, qLineEdit : QLineEdit):
+    qLineEdit.setStyleSheet("")
+
+  def TextChange(self, qLineEdit : QLineEdit):
+    qLineEdit.setStyleSheet("color : darkgreen;")
+
+  #---------------------------------
+  def SetOnOff(self, mod, ch):
+    state = self.chkON[mod][ch].checkState()
+    if state ==  Qt.CheckState.Checked:
+      bd[mod].Channel[ch].SetPowerOnOff(1)
+    else:
+      bd[mod].Channel[ch].SetPowerOnOff(0)
+
+    value = bd[mod].Channel[ch].GetPowerOnOff()
+    OnOffList[mod][ch] = value
+    print("mod : " +  str(mod) + ", ch : " + str(ch) + " | " +  str(state) + " | " + str(value))
+    self.chkON[mod][ch].setChecked(value == 1)
+
+  #---------------------------------
+  def SetHV(self, mod, ch):
+    value = float(self.txtV[mod][ch].text())
+    print("mod : " +  str(mod) + ", ch : " + str(ch) + " | " +  str(value))
+    bd[mod].Channel[ch].SetV0Set(value)
+    newValue = bd[mod].Channel[ch].GetV0Set()
+    V0SetList[mod][ch] = newValue
+    self.txtV[mod][ch].setText("{:.1f}".format(newValue))
+
+  #---------------------------------
+  def SetI(self, mod, ch):
+    value = float(self.txtI[mod][ch].text())
+    print("mod : " +  str(mod) + ", ch : " + str(ch) + " | " +  str(value))
+    bd[mod].Channel[ch].SetI0Set(value)
+    newValue = bd[mod].Channel[ch].GetI0Set()
+    I0SetList[mod][ch] = newValue
+    self.txtI[mod][ch].setText("{:.1f}".format(newValue))
+
+  #---------------------------------
+  def updateTimer(self):
+    self.time += 1
+    print(f'Time: {self.time}')
+    # outVList = mpod.GetAllOutputHV()
+    # outIList = mpod.GetAllLC() 
+    # # print(outVList)
+    
+    for k in range(2):
+      outVList.append(bd[k].GetPV('VMon'))
+      outIList.append(bd[k].GetPV('IMon'))
+
+    # if self.chkDB.checkState() == Qt.CheckState.Checked:
+    #   points = []
+
+    for k in range(0, nMod):
+      for i in range(bd[k].numCh) :
+        self.txtVOut[k][i].setText("{:.2f}".format(outVList[k][i]))
+        self.txtIOut[k][i].setText("{:.2f}".format(outIList[k][i]))
+
+        # if self.chkDB.checkState() == Qt.CheckState.Checked:
+        #   points.append(Point("Voltage").tag("Ch",int(chList[i] + 100 * k)).field("value",float(outVList[i])))
+        #   points.append(Point("LeakageCurrent").tag("Ch",int(chList[i] + 100 * k)).field("value",float(outIList[i])))
+
+    # if self.chkDB.checkState() == Qt.CheckState.Checked:
+    #   write_api.write(bucket=bucket, org=org, record=points)
+
+
+
+if __name__ == "__main__":
+  app = QApplication(sys.argv)
+  window = MyWindow()
+  window.show()
+  sys.exit(app.exec())
\ No newline at end of file
diff --git a/HVLibrary.py b/HVLibrary.py
index 6c7a7c4..3663829 100755
--- a/HVLibrary.py
+++ b/HVLibrary.py
@@ -29,9 +29,9 @@ def get_value(pv_name : str, show : bool = False):
   return value
 
 
-def set_value(pv_name : str, value):
+def set_value(pv_name : str, value) -> None:
   pv = epics.PV(hostName + ":" + pv_name, connection_timeout=0.1)
-  return pv.put(value)
+  pv.put(value)
 
 
 #======= general
@@ -88,7 +88,7 @@ class Channel:
   def GetStatus(self) -> str:
     return get_value(self.bdCh + "Status")
 
-  def GetPowerOnOff(self) -> str:
+  def GetPowerOnOff(self) -> int:
     return get_value(self.bdCh + "Pw")
 
   def GetPowerOnOption(self) -> str:
@@ -122,14 +122,14 @@ class Channel:
   def SetMaxVoltage(self, volt: float):
     set_value(self.bdCh + "SVMax", volt)
 
-  def GetPowerOnOff(self, onOff : bool):  # off = 0, on = 1
-    return get_value(self.bdCh + "Pw", onOff)
+  def SetPowerOnOff(self, onOff):  # off = 0, on = 1
+    set_value(self.bdCh + "Pw", onOff)
 
-  def GetPowerOnOption(self, disEn : bool): #disable = 0, enable = 1, if enable, restart will restore in same condition
-    return get_value(self.bdCh + "POn", disEn)
+  def SetPowerOnOption(self, disEn : bool): #disable = 0, enable = 1, if enable, restart will restore in same condition
+    set_value(self.bdCh + "POn", disEn)
 
-  def GetPowerDownOptionWhenTrip(self, killRamp) :  # kill = 0, Ramp = 1
-    return get_value(self.bdCh + "PDwn", killRamp)
+  def SetPowerDownOptionWhenTrip(self, killRamp) :  # kill = 0, Ramp = 1
+    set_value(self.bdCh + "PDwn", killRamp)
 
 
 ####################################################
@@ -158,3 +158,9 @@ class Board:
 
   def GetTemp(self) -> float:
     return get_value(self.id + ":" + 'Temp')
+  
+  def GetPV(self, PV_Name : str):
+    pvList = []
+    for i in range(48):
+      pvList.append('solarisHV:' + self.id + ":" + f"{i:03d}" + ":" + PV_Name)
+    return epics.caget_many(pvList)
diff --git a/test.py b/test.py
index 18ce8dc..c2fc236 100755
--- a/test.py
+++ b/test.py
@@ -2,17 +2,74 @@
 
 import HVLibrary as hv
 
-#set_value('03:000:' + Ch_PV_List[1], 5)
-#hv.get_value('03:000:' + hv.Ch_PV_List[1])
-#hv.get_value('03:000:' + hv.Ch_PV_List[0])
+# hv.get_value('03:000:' + hv.Ch_PV_List[1])
+# hv.get_value('03:000:' + hv.Ch_PV_List[0])
 
 # index = 14
 # hv.get_value('03:000:' + hv.Ch_PV_List[index], True)
 # cf = hv.get_CtrlField('03:000:' + hv.Ch_PV_List[index])
 # print(cf)
 
-bd = hv.Board(3)
+# bd = []
 
-print( bd.GetTemp())
+# for k in range(2):
+#   bd.append(hv.Board(3 + k))
 
-print( bd.Channel[0].GetName() )
\ No newline at end of file
+# print( bd[0].GetTemp())
+# print( bd[0].Channel[15].GetName() )
+
+# bd[0].Channel[15].SetPowerOnOff(1)
+
+# print(bd[0].Channel[15].GetPowerOnOff())
+
+# print(bd[0].Channel[15].GetVMon())
+
+# print(bd[0].Channel[15].GetPowerOnOff())
+# for k in range(2):
+#   print("==========================")
+#   for i in range(bd[k].numCh):
+#     print("{:.2f}".format(bd[k].Channel[i].GetVMon()))
+
+
+# hv.set_value('03:015:Pw', 1)
+
+# haha = hv.get_value('03:015:Status')
+# print(haha)
+
+# haha = hv.get_value('03:015:Pw')
+# print(haha)
+
+# haha = hv.get_value('03:015:V0Set')
+# print(haha)
+
+# haha = hv.get_value('03:015:VMon')
+# print(haha)
+
+
+# haha = hv.get_value('03:BdStatus')
+# print(haha)
+
+# hv.epics.caput('solarisHV:03:015:Pw', 1)
+
+# hv.epics.cainfo('solarisHV:03:015:Pw')
+
+
+# m1 = hv.epics.caget('solarisHV:03:015:Pw', use_monitor= False)
+# print(m1)
+
+# m1 = hv.epics.caget('solarisHV:03:015:VMon')
+# print(m1)
+
+
+# m1 = hv.epics.caget('solarisHV:03:015:Pw')
+# print(m1)
+
+# hv.epics.camonitor('solarisHV:03:015:Pw')
+
+pvList = []
+for i in range(48):
+  pvList.append('solarisHV:03:' +  f"{i:03d}" + ":VMon")
+
+haha = hv.epics.caget_many(pvList)
+
+print(haha)
\ No newline at end of file