diff --git a/pytec/pytec/gui/view/param_tree.json b/pytec/pytec/gui/view/param_tree.json
index e495b84..674506b 100644
--- a/pytec/pytec/gui/view/param_tree.json
+++ b/pytec/pytec/gui/view/param_tree.json
@@ -1,365 +1,365 @@
 {
-    "ctrl_panel":[
-       {
-          "name":"Temperature",
-          "type":"float",
-          "format":"{value:.4f} °C",
-          "readonly":true
-       },
-       {
-          "name":"Current through TEC",
-          "type":"float",
-          "suffix":"mA",
-          "decimals":6,
-          "readonly":true
-       },
-       {
-          "name":"Output Config",
-          "expanded":true,
-          "type":"group",
-          "children":[
-             {
-                "name":"Control Method",
-                "type":"mutex",
-                "limits":[
-                   "Constant Current",
-                   "Temperature PID"
-                ],
-                "activaters":[
-                   null,
-                   [
-                      "pwm",
-                      "ch",
-                      "pid"
-                   ]
-                ],
-                "children":[
-                   {
-                      "name":"Set Current",
-                      "type":"float",
-                      "value":0,
-                      "step":100,
-                      "limits":[
-                         -2000,
-                         2000
-                      ],
-                      "triggerOnShow":true,
-                      "decimals":6,
-                      "suffix":"mA",
-                      "param":[
-                         "pwm",
-                         "ch",
-                         "i_set"
-                      ],
-                      "lock":false
-                   },
-                   {
-                      "name":"Set Temperature",
-                      "type":"float",
-                      "value":25,
-                      "step":0.1,
-                      "limits":[
-                         -273,
-                         300
-                      ],
-                      "format":"{value:.4f} °C",
-                      "param":[
-                         "pid",
-                         "ch",
-                         "target"
-                      ],
-                      "lock":false
-                   }
-                ]
-             },
-             {
-                "name":"Limits",
-                "expanded":true,
-                "type":"group",
-                "children":[
-                   {
-                      "name":"Max Cooling Current",
-                      "type":"float",
-                      "value":0,
-                      "step":100,
-                      "decimals":6,
-                      "limits":[
-                         0,
-                         2000
-                      ],
-                      "suffix":"mA",
-                      "param":[
-                         "pwm",
-                         "ch",
-                         "max_i_pos"
-                      ],
-                      "lock":false
-                   },
-                   {
-                      "name":"Max Heating Current",
-                      "type":"float",
-                      "value":0,
-                      "step":100,
-                      "decimals":6,
-                      "limits":[
-                         0,
-                         2000
-                      ],
-                      "suffix":"mA",
-                      "param":[
-                         "pwm",
-                         "ch",
-                         "max_i_neg"
-                      ],
-                      "lock":false
-                   },
-                   {
-                      "name":"Max Voltage Difference",
-                      "type":"float",
-                      "value":0,
-                      "step":0.1,
-                      "limits":[
-                         0,
-                         5
-                      ],
-                      "siPrefix":true,
-                      "suffix":"V",
-                      "param":[
-                         "pwm",
-                         "ch",
-                         "max_v"
-                      ],
-                      "lock":false
-                   }
-                ]
-             }
-          ]
-       },
-       {
-          "name":"Thermistor Config",
-          "expanded":true,
-          "type":"group",
-          "children":[
-             {
-                "name":"T₀",
-                "type":"float",
-                "value":25,
-                "step":0.1,
-                "limits":[
-                   -100,
-                   100
-                ],
-                "format":"{value:.4f} °C",
-                "param":[
-                   "s-h",
-                   "ch",
-                   "t0"
-                ],
-                "lock":false
-             },
-             {
-                "name":"R₀",
-                "type":"float",
-                "value":10000,
-                "step":1,
-                "siPrefix":true,
-                "suffix":"Ω",
-                "param":[
-                   "s-h",
-                   "ch",
-                   "r0"
-                ],
-                "lock":false
-             },
-             {
-                "name":"B",
-                "type":"float",
-                "value":3950,
-                "step":1,
-                "suffix":"K",
-                "decimals":4,
-                "param":[
-                   "s-h",
-                   "ch",
-                   "b"
-                ],
-                "lock":false
-             },
-             {
-                "name":"Postfilter Rate",
-                "type":"list",
-                "value":16.67,
-                "param":[
-                   "postfilter",
-                   "ch",
-                   "rate"
-                ],
-                "limits":{
-                   "Off":null,
-                   "16.67 Hz":16.67,
-                   "20 Hz":20.0,
-                   "21.25 Hz":21.25,
-                   "27 Hz":27.0
-                },
-                "lock":false
-             }
-          ]
-       },
-       {
-          "name":"PID Config",
-          "expanded":true,
-          "type":"group",
-          "children":[
-             {
-                "name":"Kp",
-                "type":"float",
-                "step":0.1,
-                "suffix":"",
-                "param":[
-                   "pid",
-                   "ch",
-                   "kp"
-                ],
-                "lock":false
-             },
-             {
-                "name":"Ki",
-                "type":"float",
-                "step":0.1,
-                "suffix":"Hz",
-                "param":[
-                   "pid",
-                   "ch",
-                   "ki"
-                ],
-                "lock":false
-             },
-             {
-                "name":"Kd",
-                "type":"float",
-                "step":0.1,
-                "suffix":"s",
-                "param":[
-                   "pid",
-                   "ch",
-                   "kd"
-                ],
-                "lock":false
-             },
-             {
-                "name":"PID Output Clamping",
-                "expanded":true,
-                "type":"group",
-                "children":[
-                   {
-                      "name":"Minimum",
-                      "type":"float",
-                      "step":100,
-                      "limits":[
-                         -2000,
-                         2000
-                      ],
-                      "decimals":6,
-                      "suffix":"mA",
-                      "param":[
-                         "pid",
-                         "ch",
-                         "output_min"
-                      ],
-                      "lock":false
-                   },
-                   {
-                      "name":"Maximum",
-                      "type":"float",
-                      "step":100,
-                      "limits":[
-                         -2000,
-                         2000
-                      ],
-                      "decimals":6,
-                      "suffix":"mA",
-                      "param":[
-                         "pid",
-                         "ch",
-                         "output_max"
-                      ],
-                      "lock":false
-                   }
-                ]
-             },
-             {
-                "name":"PID Auto Tune",
-                "expanded":false,
-                "type":"group",
-                "children":[
-                   {
-                      "name":"Target Temperature",
-                      "type":"float",
-                      "value":20,
-                      "step":0.1,
-                      "format":"{value:.4f} °C",
-                      "pid_autotune":[
-                         "target_temp",
-                         "ch"
-                      ]
-                   },
-                   {
-                      "name":"Test Current",
-                      "type":"float",
-                      "value":0,
-                      "decimals":6,
-                      "step":100,
-                      "limits":[
-                         -2000,
-                         2000
-                      ],
-                      "suffix":"mA",
-                      "pid_autotune":[
-                         "test_current",
-                         "ch"
-                      ]
-                   },
-                   {
-                      "name":"Temperature Swing",
-                      "type":"float",
-                      "value":1.5,
-                      "step":0.1,
-                      "prefix":"±",
-                      "format":"{value:.4f} °C",
-                      "pid_autotune":[
-                         "temp_swing",
-                         "ch"
-                      ]
-                   },
-                   {
-                     "name":"Lookback",
-                     "type":"float",
-                     "value":3.0,
-                     "step":0.1,
-                     "format":"{value:.4f} s",
-                     "pid_autotune":[
+   "ctrl_panel": [
+      {
+         "name": "Temperature",
+         "type": "float",
+         "format": "{value:.4f} °C",
+         "readonly": true
+      },
+      {
+         "name": "Current through TEC",
+         "type": "float",
+         "suffix": "mA",
+         "decimals": 6,
+         "readonly": true
+      },
+      {
+         "name": "Output Config",
+         "expanded": true,
+         "type": "group",
+         "children": [
+            {
+               "name": "Control Method",
+               "type": "mutex",
+               "limits": [
+                  "Constant Current",
+                  "Temperature PID"
+               ],
+               "activaters": [
+                  null,
+                  [
+                     "pwm",
+                     "ch",
+                     "pid"
+                  ]
+               ],
+               "children": [
+                  {
+                     "name": "Set Current",
+                     "type": "float",
+                     "value": 0,
+                     "step": 100,
+                     "limits": [
+                        -2000,
+                        2000
+                     ],
+                     "triggerOnShow": true,
+                     "decimals": 6,
+                     "suffix": "mA",
+                     "param": [
+                        "pwm",
+                        "ch",
+                        "i_set"
+                     ],
+                     "lock": false
+                  },
+                  {
+                     "name": "Set Temperature",
+                     "type": "float",
+                     "value": 25,
+                     "step": 0.1,
+                     "limits": [
+                        -273,
+                        300
+                     ],
+                     "format": "{value:.4f} °C",
+                     "param": [
+                        "pid",
+                        "ch",
+                        "target"
+                     ],
+                     "lock": false
+                  }
+               ]
+            },
+            {
+               "name": "Limits",
+               "expanded": true,
+               "type": "group",
+               "children": [
+                  {
+                     "name": "Max Cooling Current",
+                     "type": "float",
+                     "value": 0,
+                     "step": 100,
+                     "decimals": 6,
+                     "limits": [
+                        0,
+                        2000
+                     ],
+                     "suffix": "mA",
+                     "param": [
+                        "pwm",
+                        "ch",
+                        "max_i_pos"
+                     ],
+                     "lock": false
+                  },
+                  {
+                     "name": "Max Heating Current",
+                     "type": "float",
+                     "value": 0,
+                     "step": 100,
+                     "decimals": 6,
+                     "limits": [
+                        0,
+                        2000
+                     ],
+                     "suffix": "mA",
+                     "param": [
+                        "pwm",
+                        "ch",
+                        "max_i_neg"
+                     ],
+                     "lock": false
+                  },
+                  {
+                     "name": "Max Voltage Difference",
+                     "type": "float",
+                     "value": 0,
+                     "step": 0.1,
+                     "limits": [
+                        0,
+                        5
+                     ],
+                     "siPrefix": true,
+                     "suffix": "V",
+                     "param": [
+                        "pwm",
+                        "ch",
+                        "max_v"
+                     ],
+                     "lock": false
+                  }
+               ]
+            }
+         ]
+      },
+      {
+         "name": "Thermistor Config",
+         "expanded": true,
+         "type": "group",
+         "children": [
+            {
+               "name": "T₀",
+               "type": "float",
+               "value": 25,
+               "step": 0.1,
+               "limits": [
+                  -100,
+                  100
+               ],
+               "format": "{value:.4f} °C",
+               "param": [
+                  "s-h",
+                  "ch",
+                  "t0"
+               ],
+               "lock": false
+            },
+            {
+               "name": "R₀",
+               "type": "float",
+               "value": 10000,
+               "step": 1,
+               "siPrefix": true,
+               "suffix": "Ω",
+               "param": [
+                  "s-h",
+                  "ch",
+                  "r0"
+               ],
+               "lock": false
+            },
+            {
+               "name": "B",
+               "type": "float",
+               "value": 3950,
+               "step": 1,
+               "suffix": "K",
+               "decimals": 4,
+               "param": [
+                  "s-h",
+                  "ch",
+                  "b"
+               ],
+               "lock": false
+            },
+            {
+               "name": "Postfilter Rate",
+               "type": "list",
+               "value": 16.67,
+               "param": [
+                  "postfilter",
+                  "ch",
+                  "rate"
+               ],
+               "limits": {
+                  "Off": null,
+                  "16.67 Hz": 16.67,
+                  "20 Hz": 20.0,
+                  "21.25 Hz": 21.25,
+                  "27 Hz": 27.0
+               },
+               "lock": false
+            }
+         ]
+      },
+      {
+         "name": "PID Config",
+         "expanded": true,
+         "type": "group",
+         "children": [
+            {
+               "name": "Kp",
+               "type": "float",
+               "step": 0.1,
+               "suffix": "",
+               "param": [
+                  "pid",
+                  "ch",
+                  "kp"
+               ],
+               "lock": false
+            },
+            {
+               "name": "Ki",
+               "type": "float",
+               "step": 0.1,
+               "suffix": "Hz",
+               "param": [
+                  "pid",
+                  "ch",
+                  "ki"
+               ],
+               "lock": false
+            },
+            {
+               "name": "Kd",
+               "type": "float",
+               "step": 0.1,
+               "suffix": "s",
+               "param": [
+                  "pid",
+                  "ch",
+                  "kd"
+               ],
+               "lock": false
+            },
+            {
+               "name": "PID Output Clamping",
+               "expanded": true,
+               "type": "group",
+               "children": [
+                  {
+                     "name": "Minimum",
+                     "type": "float",
+                     "step": 100,
+                     "limits": [
+                        -2000,
+                        2000
+                     ],
+                     "decimals": 6,
+                     "suffix": "mA",
+                     "param": [
+                        "pid",
+                        "ch",
+                        "output_min"
+                     ],
+                     "lock": false
+                  },
+                  {
+                     "name": "Maximum",
+                     "type": "float",
+                     "step": 100,
+                     "limits": [
+                        -2000,
+                        2000
+                     ],
+                     "decimals": 6,
+                     "suffix": "mA",
+                     "param": [
+                        "pid",
+                        "ch",
+                        "output_max"
+                     ],
+                     "lock": false
+                  }
+               ]
+            },
+            {
+               "name": "PID Auto Tune",
+               "expanded": false,
+               "type": "group",
+               "children": [
+                  {
+                     "name": "Target Temperature",
+                     "type": "float",
+                     "value": 20,
+                     "step": 0.1,
+                     "format": "{value:.4f} °C",
+                     "pid_autotune": [
+                        "target_temp",
+                        "ch"
+                     ]
+                  },
+                  {
+                     "name": "Test Current",
+                     "type": "float",
+                     "value": 0,
+                     "decimals": 6,
+                     "step": 100,
+                     "limits": [
+                        -2000,
+                        2000
+                     ],
+                     "suffix": "mA",
+                     "pid_autotune": [
+                        "test_current",
+                        "ch"
+                     ]
+                  },
+                  {
+                     "name": "Temperature Swing",
+                     "type": "float",
+                     "value": 1.5,
+                     "step": 0.1,
+                     "prefix": "±",
+                     "format": "{value:.4f} °C",
+                     "pid_autotune": [
+                        "temp_swing",
+                        "ch"
+                     ]
+                  },
+                  {
+                     "name": "Lookback",
+                     "type": "float",
+                     "value": 3.0,
+                     "step": 0.1,
+                     "format": "{value:.4f} s",
+                     "pid_autotune": [
                         "lookback",
                         "ch"
                      ]
                   },
-                   {
-                      "name":"Run",
-                      "type":"action",
-                      "tip":"Run"
-                   }
-                ]
-             }
-          ]
-       },
-       {
-          "name":"Save to flash",
-          "type":"action",
-          "tip":"Save config to thermostat, applies on reset"
-       },
-       {
-          "name":"Load from flash",
-          "type":"action",
-          "tip":"Load config from flash"
-       }
-    ]
- }
\ No newline at end of file
+                  {
+                     "name": "Run",
+                     "type": "action",
+                     "tip": "Run"
+                  }
+               ]
+            }
+         ]
+      },
+      {
+         "name": "Save to flash",
+         "type": "action",
+         "tip": "Save config to thermostat, applies on reset"
+      },
+      {
+         "name": "Load from flash",
+         "type": "action",
+         "tip": "Load config from flash"
+      }
+   ]
+}
\ No newline at end of file