diff --git a/src/main.py b/src/main.py
index ca6f52d..42289d5 100644
--- a/src/main.py
+++ b/src/main.py
@@ -17,7 +17,7 @@ class App(ctk.CTk):
     __column_weight = [1, 9, 3]
     serial_status = False
     serial_baudrate = 9600
-    default_day = [1.10, 0.70, 1.10, 1.20, 0.60]
+    default_day = [0.59, 0.27, 0.48, 1.56, 0.40]
     default_night = [1.30, 0.70, 1.10, 2.20, 0.50]
     gain_default = default_day
     gain_values = gain_default.copy()
@@ -489,9 +489,7 @@ class App(ctk.CTk):
                         int(
                             self.gain_values[i]
                             if self.gain_values[i] > 0
-                            else 255
-                            if self.gain_values[i] < 0 and self.gain_values[i] > -1.0
-                            else (~int(abs(self.gain_values[i])) + 1) % 256
+                            else (~int(abs(self.gain_values[i] * 256)) + 1) / 256 % 256
                         )
                     )
                     bytes.append(
@@ -535,11 +533,8 @@ class App(ctk.CTk):
             messagebox.showError("Please Connect to Serial")
         else:
             if is_open:
-                if video == 0 or video == 1:
-                    if video == 0:
-                        self.gain_default = self.default_day
-                    elif video == 1:
-                        self.gain_default = self.default_night
+                if video == 0:
+                    self.gain_default = self.default_day
 
                     self.serial.write((switchSign(video) + "ed").encode())
                     for i in range(4):
@@ -547,6 +542,18 @@ class App(ctk.CTk):
                             self.gain_checkbox[i].toggle()
                             time.sleep(0.001)
                     self.setISP()
+                elif video == 1:
+                    self.gain_default = self.default_night
+
+                    self.serial.write((switchSign(video) + "ed").encode())
+                    for i in range(4):
+                        if self.gain_checkbox[i].get() == 0:
+                            self.gain_checkbox[i].toggle()
+                            time.sleep(0.001)
+                    if self.gain_checkbox[3].get() == 1:
+                        self.gain_checkbox[i].toggle()
+                        time.sleep(0.001)
+                    self.setISP()
                 elif video >= 2 and video <= 3:
                     self.serial.write((switchSign(video) + "ed").encode())
                 else: