diff --git a/Firmware/src/binary_data.ino b/Firmware/src/binary_data.ino
index dc1d731..9c3a96c 100644
--- a/Firmware/src/binary_data.ino
+++ b/Firmware/src/binary_data.ino
@@ -1,7 +1,7 @@
 // This file was auto generated using ESP32 Data Embed script
 // Please do not manually modify this file
 // since any changes to this file will be overwritten on next build.
-// Generated on 2025-02-21 21:14:04
+// Generated on 2025-02-21 23:36:03
 
 
 
@@ -9,7 +9,7 @@
 
 // Content of `/favicon.ico`
 const uint8_t web_data_favicon_ico[2002] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xED, 0x9B, 0x79, 0x50, 0x13, 0x67,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xED, 0x9B, 0x79, 0x50, 0x13, 0x67,
 0x14, 0xC0, 0x17, 0xF1, 0xAE, 0x15, 0x8F, 0x4E, 0xEB, 0x35, 0x15, 0xA5, 0x55, 0xAB, 0xCE, 0x94,
 0x71, 0xDA, 0x19, 0x67, 0x74, 0x0A, 0x56, 0xDB, 0x8E, 0xA5, 0x58, 0x8B, 0xC5, 0x96, 0x02, 0x82,
 0x1C, 0x11, 0x4F, 0x4E, 0xC9, 0xEE, 0x26, 0xE0, 0x42, 0x38, 0x84, 0x5C, 0x20, 0xE4, 0x44, 0x0E,
@@ -138,7 +138,7 @@ const uint8_t web_data_favicon_ico[2002] PROGMEM = {
 };
 // Content of `/favicon.png`
 const uint8_t web_data_favicon_png[2634] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0x01, 0x33, 0x0A, 0xCC, 0xF5, 0x89,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0x01, 0x33, 0x0A, 0xCC, 0xF5, 0x89,
 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, 0x00,
 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x40, 0x08, 0x06, 0x00, 0x00, 0x00, 0xAA, 0x69, 0x71, 0xDE,
 0x00, 0x00, 0x00, 0x04, 0x73, 0x42, 0x49, 0x54, 0x08, 0x08, 0x08, 0x08, 0x7C, 0x08, 0x64, 0x88,
@@ -995,7 +995,7 @@ const uint8_t web_data_settings_html[7812] PROGMEM = {
 };
 // Content of `/css/bootstrap-grid.min.css`
 const uint8_t web_data_css_bootstrap_grid_min_css[3477] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xD5, 0x5C, 0x5B, 0x8F, 0xE3, 0xB6,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xD5, 0x5C, 0x5B, 0x8F, 0xE3, 0xB6,
 0x19, 0x7D, 0xCF, 0xAF, 0x70, 0x50, 0x04, 0x48, 0x06, 0x2B, 0x8F, 0xE4, 0xBB, 0x3D, 0x48, 0x91,
 0x36, 0x08, 0x82, 0x05, 0x36, 0x7D, 0x68, 0xD3, 0xA7, 0xA2, 0x0F, 0xB2, 0x4D, 0x7B, 0xD4, 0xE8,
 0x62, 0x48, 0xF2, 0x8C, 0x36, 0x83, 0xF9, 0xEF, 0xE5, 0x47, 0x8A, 0x14, 0x25, 0x52, 0xA2, 0xE4,
@@ -1216,7 +1216,7 @@ const uint8_t web_data_css_bootstrap_grid_min_css[3477] PROGMEM = {
 };
 // Content of `/css/bootstrap-reboot.min.css`
 const uint8_t web_data_css_bootstrap_reboot_min_css[1583] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xA5, 0x57, 0x4B, 0x6F, 0xDB, 0x38,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xA5, 0x57, 0x4B, 0x6F, 0xDB, 0x38,
 0x10, 0xBE, 0xF7, 0x57, 0xA8, 0x2E, 0x0A, 0x34, 0x01, 0x69, 0xCB, 0x69, 0xDD, 0x74, 0x25, 0x14,
 0xD8, 0xB6, 0x68, 0xB1, 0x01, 0xDA, 0x1E, 0x9A, 0xF6, 0x14, 0xF8, 0x40, 0x49, 0x23, 0x8B, 0x35,
 0x45, 0x6A, 0x49, 0xCA, 0x8E, 0x23, 0xE8, 0xBF, 0xEF, 0x50, 0x0F, 0x5B, 0x8A, 0xED, 0xF4, 0xB0,
@@ -1318,7 +1318,7 @@ const uint8_t web_data_css_bootstrap_reboot_min_css[1583] PROGMEM = {
 };
 // Content of `/css/bootstrap.min.css`
 const uint8_t web_data_css_bootstrap_min_css[24481] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xED, 0xBD, 0xFB, 0x8F, 0xE3, 0x38,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xED, 0xBD, 0xFB, 0x8F, 0xE3, 0x38,
 0x92, 0x20, 0xFC, 0xFB, 0xFD, 0x15, 0xDE, 0x6A, 0xD4, 0x57, 0x9D, 0xD3, 0xB6, 0xCB, 0x92, 0xDF,
 0x4E, 0x74, 0x7D, 0xF3, 0xC0, 0x2E, 0x76, 0x80, 0x9E, 0xC5, 0x61, 0xE7, 0x0E, 0x38, 0xA0, 0xAF,
 0x0E, 0x90, 0x2D, 0x39, 0xED, 0x29, 0xF9, 0x71, 0xB6, 0xB3, 0x4A, 0x39, 0x46, 0xEE, 0xDF, 0x7E,
@@ -2852,7 +2852,7 @@ const uint8_t web_data_css_bootstrap_min_css[24481] PROGMEM = {
 };
 // Content of `/css/brands.min.css`
 const uint8_t web_data_css_brands_min_css[307] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0x8D, 0x51, 0x3D, 0x6F, 0x83, 0x30,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0x8D, 0x51, 0x3D, 0x6F, 0x83, 0x30,
 0x10, 0xDD, 0xF3, 0x2B, 0xAE, 0x64, 0x81, 0x08, 0x6C, 0xA8, 0xC2, 0xE2, 0x0C, 0x6D, 0x83, 0x84,
 0x14, 0x89, 0xAA, 0x43, 0xBB, 0x74, 0x34, 0x70, 0x4E, 0x50, 0x0D, 0x46, 0xD8, 0x29, 0x45, 0x55,
 0xFE, 0x7B, 0x81, 0x24, 0x4A, 0xB2, 0xA4, 0x6C, 0xBE, 0x77, 0xEF, 0xCB, 0x3A, 0xBA, 0x78, 0x98,
@@ -2875,7 +2875,7 @@ const uint8_t web_data_css_brands_min_css[307] PROGMEM = {
 };
 // Content of `/css/custom.min.css`
 const uint8_t web_data_css_custom_min_css[1262] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xAD, 0x57, 0xED, 0x6E, 0xB3, 0x36,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xAD, 0x57, 0xED, 0x6E, 0xB3, 0x36,
 0x14, 0xFE, 0xBF, 0xAB, 0xF0, 0x1A, 0x55, 0x6A, 0xB4, 0x82, 0x20, 0x1F, 0x4D, 0x0A, 0x5A, 0xB5,
 0xFB, 0x98, 0xF6, 0xC3, 0x60, 0x13, 0xBC, 0x82, 0x6D, 0xD9, 0x4E, 0x93, 0xBE, 0x51, 0xEE, 0x7D,
 0xC7, 0x36, 0x10, 0x4C, 0x49, 0xA7, 0xE9, 0x9D, 0xA2, 0x36, 0xD8, 0x3E, 0x9C, 0xCF, 0xE7, 0x3C,
@@ -2957,7 +2957,7 @@ const uint8_t web_data_css_custom_min_css[1262] PROGMEM = {
 };
 // Content of `/css/fontawesome.min.css`
 const uint8_t web_data_css_fontawesome_min_css[12410] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xCD, 0x9D, 0x5B, 0xAF, 0xE3, 0xBC,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xCD, 0x9D, 0x5B, 0xAF, 0xE3, 0xBC,
 0x95, 0xA6, 0xEF, 0xFB, 0x57, 0xEC, 0x49, 0xA3, 0x81, 0xA4, 0xF1, 0xA9, 0xA2, 0xB3, 0xE4, 0x2A,
 0xCC, 0x20, 0xD3, 0x19, 0x04, 0x08, 0x90, 0xC6, 0x5C, 0x4C, 0x5F, 0x74, 0x80, 0xB9, 0xA1, 0x24,
 0xCA, 0x66, 0x6D, 0x49, 0xD4, 0xA7, 0x83, 0xBD, 0x5D, 0x85, 0xFC, 0xF7, 0x21, 0x65, 0x2F, 0x8A,
@@ -3736,7 +3736,7 @@ const uint8_t web_data_css_fontawesome_min_css[12410] PROGMEM = {
 };
 // Content of `/css/solid.min.css`
 const uint8_t web_data_css_solid_min_css[309] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0x8D, 0x51, 0x3B, 0x6F, 0x83, 0x30,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0x8D, 0x51, 0x3B, 0x6F, 0x83, 0x30,
 0x10, 0xDE, 0xF3, 0x2B, 0xAE, 0x64, 0x81, 0x08, 0xEC, 0x50, 0x85, 0xA1, 0xCE, 0xD0, 0x47, 0xA4,
 0x48, 0x91, 0xA8, 0x3A, 0x34, 0x4B, 0x47, 0x1E, 0xE7, 0xC4, 0xAA, 0xC1, 0x08, 0x3B, 0xA5, 0xA8,
 0xCA, 0x7F, 0x2F, 0x8F, 0x54, 0x90, 0x25, 0x65, 0xB0, 0xE4, 0xBB, 0xEF, 0x75, 0xA7, 0xA3, 0x8B,
@@ -3759,7 +3759,7 @@ const uint8_t web_data_css_solid_min_css[309] PROGMEM = {
 };
 // Content of `/js/bootstrap.bundle.min.js`
 const uint8_t web_data_js_bootstrap_bundle_min_js[19041] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xDD, 0x7D, 0x0D, 0x7B, 0xDB, 0xC6,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xDD, 0x7D, 0x0D, 0x7B, 0xDB, 0xC6,
 0x91, 0xF0, 0x5F, 0xA1, 0xD0, 0x3B, 0x19, 0x08, 0x97, 0xB4, 0x94, 0x34, 0xD7, 0x96, 0x34, 0xCC,
 0x57, 0x96, 0xE4, 0x44, 0x57, 0x5B, 0x72, 0x2D, 0xDA, 0x69, 0x2A, 0xF3, 0x14, 0x88, 0x5C, 0x92,
 0xA8, 0x49, 0x80, 0x05, 0x40, 0xD9, 0xAA, 0xC8, 0xFB, 0xED, 0xEF, 0xCC, 0xEC, 0x07, 0x76, 0x81,
@@ -4953,7 +4953,7 @@ const uint8_t web_data_js_bootstrap_bundle_min_js[19041] PROGMEM = {
 };
 // Content of `/js/bootstrap.min.js`
 const uint8_t web_data_js_bootstrap_min_js[12893] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xDD, 0x7D, 0x7B, 0x5F, 0xE3, 0x48,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xDD, 0x7D, 0x7B, 0x5F, 0xE3, 0x48,
 0x92, 0xE0, 0x57, 0x31, 0x9A, 0xBD, 0x2A, 0xE9, 0x48, 0x54, 0xD0, 0x3D, 0xB3, 0x33, 0x63, 0x97,
 0xCA, 0x47, 0x81, 0x7B, 0xDA, 0xD7, 0x14, 0xB0, 0x40, 0x75, 0x6F, 0x2F, 0xCD, 0xF2, 0x13, 0x76,
 0x62, 0x67, 0x97, 0x2C, 0x69, 0x25, 0x99, 0x2A, 0x16, 0x7B, 0x3F, 0xFB, 0x45, 0xE4, 0x4B, 0x99,
@@ -5762,7 +5762,7 @@ const uint8_t web_data_js_bootstrap_min_js[12893] PROGMEM = {
 };
 // Content of `/js/chart.js`
 const uint8_t web_data_js_chart_js[69190] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xD4, 0xBD, 0x0B, 0x77, 0xDB, 0xB6,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xD4, 0xBD, 0x0B, 0x77, 0xDB, 0xB6,
 0xB2, 0x30, 0xFA, 0x57, 0x6C, 0x9D, 0xC6, 0x25, 0x2D, 0x48, 0x96, 0x94, 0x38, 0x0F, 0xCA, 0xB4,
 0x56, 0x9E, 0x4D, 0xDA, 0x24, 0x4E, 0xE3, 0x34, 0x7D, 0x78, 0xEB, 0xF3, 0xA6, 0x44, 0x48, 0x42,
 0x43, 0x93, 0x2A, 0x41, 0xC5, 0x56, 0x65, 0xFD, 0xF7, 0x3B, 0x33, 0x78, 0x52, 0x92, 0xD3, 0x7D,
@@ -10090,7 +10090,7 @@ const uint8_t web_data_js_chart_js[69190] PROGMEM = {
 };
 // Content of `/js/chart.min.js`
 const uint8_t web_data_js_chart_min_js[57330] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xEC, 0xBD, 0x8B, 0x76, 0xDB, 0xC8,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xEC, 0xBD, 0x8B, 0x76, 0xDB, 0xC8,
 0x95, 0x28, 0xFA, 0x2B, 0x12, 0x57, 0x1F, 0x85, 0x30, 0x8B, 0x34, 0xE5, 0xDC, 0x64, 0x66, 0x40,
 0xA1, 0x79, 0xFD, 0xEA, 0xC4, 0x27, 0x76, 0xDB, 0xC7, 0x76, 0x4F, 0x92, 0xC3, 0xA5, 0xA5, 0x03,
 0x11, 0x25, 0xB2, 0x62, 0x08, 0xE0, 0x00, 0xA0, 0x2C, 0x85, 0xC2, 0xBF, 0x9F, 0xFD, 0xA8, 0x27,
@@ -13677,7 +13677,7 @@ const uint8_t web_data_js_chart_min_js[57330] PROGMEM = {
 };
 // Content of `/js/jquery-3.6.0.min.js`
 const uint8_t web_data_js_jquery_3_6_0_min_js[30812] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xBC, 0xBD, 0x09, 0x7B, 0xDB, 0x46,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xBC, 0xBD, 0x09, 0x7B, 0xDB, 0x46,
 0xB2, 0x2E, 0xFC, 0x57, 0x44, 0x4C, 0x8E, 0x06, 0x30, 0x9B, 0x14, 0xE9, 0x4C, 0x72, 0xEF, 0x80,
 0x42, 0xF8, 0x38, 0xB2, 0x93, 0xF8, 0x4C, 0x9C, 0xC5, 0x72, 0x26, 0xC9, 0x50, 0x4C, 0x1E, 0x88,
 0x6C, 0x4A, 0x88, 0x21, 0x80, 0x01, 0x40, 0xC9, 0x8A, 0xC8, 0xF9, 0xED, 0x5F, 0xBD, 0xD5, 0x0B,
@@ -15606,7 +15606,7 @@ const uint8_t web_data_js_jquery_3_6_0_min_js[30812] PROGMEM = {
 };
 // Content of `/js/winfidel_calibration.js`
 const uint8_t web_data_js_winfidel_calibration_js[818] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0xD5, 0x56, 0x51, 0x6F, 0xDA, 0x30,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0xD5, 0x56, 0x51, 0x6F, 0xDA, 0x30,
 0x10, 0x7E, 0xAF, 0xD4, 0xFF, 0x90, 0xA6, 0xD5, 0xEC, 0x08, 0x12, 0xE8, 0xA4, 0xBD, 0x0C, 0x42,
 0x5F, 0xB6, 0x49, 0xDD, 0x43, 0x37, 0x6D, 0x8F, 0x08, 0x21, 0x13, 0x1B, 0xF0, 0xEA, 0xC4, 0x91,
 0x7D, 0x81, 0x56, 0x2D, 0xFF, 0x7D, 0xE7, 0x84, 0xD0, 0x00, 0x61, 0x4C, 0xDA, 0xD3, 0x24, 0x14,
@@ -15661,7 +15661,7 @@ const uint8_t web_data_js_winfidel_calibration_js[818] PROGMEM = {
 };
 // Content of `/js/winfidel_index.js`
 const uint8_t web_data_js_winfidel_index_js[579] PROGMEM = {
-0x1F, 0x8B, 0x08, 0x00, 0xEC, 0x32, 0xB9, 0x67, 0x02, 0xFF, 0x7D, 0x54, 0xDB, 0x8A, 0xDB, 0x30,
+0x1F, 0x8B, 0x08, 0x00, 0x33, 0x54, 0xB9, 0x67, 0x02, 0xFF, 0x7D, 0x54, 0xDB, 0x8A, 0xDB, 0x30,
 0x10, 0x7D, 0x5F, 0xD8, 0x7F, 0x08, 0xDB, 0x80, 0x6C, 0xE2, 0x3A, 0xCE, 0x96, 0xBC, 0xC8, 0x4D,
 0x4B, 0xDB, 0x2C, 0x34, 0x85, 0x5E, 0x20, 0x6F, 0x0D, 0x21, 0xA8, 0xD6, 0xC4, 0x11, 0xB5, 0x65,
 0xA3, 0x4B, 0x2E, 0x6B, 0xFC, 0xEF, 0x1D, 0x39, 0xC9, 0x6E, 0xD6, 0xEB, 0xD4, 0x60, 0x49, 0x68,
diff --git a/Firmware/src/config_winfidel.h b/Firmware/src/config_winfidel.h
index 25ba173..ed87426 100644
--- a/Firmware/src/config_winfidel.h
+++ b/Firmware/src/config_winfidel.h
@@ -36,7 +36,8 @@
 #define LED_RED_PIN                         5       // RED LED pin number
 #define LED_GREEN_PIN                       4       // GREEN LED pin number
 #define LED_BLUE_PIN                        3       // BLUE LED pin number
-#define LED_MEASUREMENT_PIN                 LED_BLUE_PIN
+#define LED_MEASUREMENT_PIN                 LED_GREEN_PIN
+#define LED_SERIAL_PIN                      LED_BLUE_PIN
 
 #define LED_RED_ON()                        do { digitalWrite(LED_RED_PIN, LOW); } while(0)
 #define LED_RED_OFF()                       do { digitalWrite(LED_RED_PIN, HIGH); } while(0)
@@ -46,6 +47,8 @@
 #define LED_BLUE_OFF()                      do { digitalWrite(LED_BLUE_PIN, HIGH); } while(0)
 #define LED_MEASUREMENT_ON()                do { digitalWrite(LED_MEASUREMENT_PIN, LOW); } while(0)
 #define LED_MEASUREMENT_OFF()               do { digitalWrite(LED_MEASUREMENT_PIN, HIGH); } while(0)
+#define LED_SERIAL_ON()                     do { digitalWrite(LED_SERIAL_PIN, LOW); } while(0)
+#define LED_SERIAL_OFF()                    do { digitalWrite(LED_SERIAL_PIN, HIGH); } while(0)
 
 // String buffers
 #define SENSOR_STR_MAX_LEN                  256
diff --git a/Firmware/src/main.ino b/Firmware/src/main.ino
index 3855ed1..50b0568 100644
--- a/Firmware/src/main.ino
+++ b/Firmware/src/main.ino
@@ -14,6 +14,10 @@ const char mdnsName[] = MDNS_NAME;
 const char wifiName[] = WIFI_HOSTNAME;
 uint8_t dbgOTApercent = 100;
 bool bStatusLED = false;
+#ifdef PRINT_MEASUREMENT_OVER_SERIAL
+int SerialInByte = 0;
+bool bSerialPrintoutRequested = false;
+#endif
 
 void setup()
 {
@@ -124,6 +128,9 @@ void setup()
     LED_RED_OFF();
 
     Serial.println("Entering main loop");
+    LED_RED_OFF();
+    LED_GREEN_OFF();
+    LED_BLUE_OFF();
 }
 
 
@@ -131,4 +138,21 @@ void loop()
 {
     Measurements_Tick();
     ArduinoOTA.handle();
+
+#ifdef PRINT_MEASUREMENT_OVER_SERIAL
+    int available = Serial.available();
+    if(available > 0)
+    {
+        SerialInByte = Serial.read();
+        if(SerialInByte == 'S' || SerialInByte == 's')
+        {
+            bSerialPrintoutRequested = true;
+        }
+        else if(SerialInByte == 'E' || SerialInByte == 'e')
+        {
+            bSerialPrintoutRequested = false;
+            LED_SERIAL_OFF();
+        }
+    }
+#endif
 }
diff --git a/Firmware/src/measurements.ino b/Firmware/src/measurements.ino
index d9d7314..1b665fa 100644
--- a/Firmware/src/measurements.ino
+++ b/Firmware/src/measurements.ino
@@ -117,11 +117,20 @@ void Measurements_Tick(void)
         }
 
         #ifdef PRINT_MEASUREMENT_OVER_SERIAL
-        if (Serial)
+        if (bSerialPrintoutRequested && (Serial.availableForWrite()>9))
         {
             Serial.print(">");
             Serial.print(gReadingLast);
             Serial.print("mm\r\n");
+
+            if (bStatusLED)
+            {
+                LED_SERIAL_ON();
+            }
+            else
+            {
+                LED_SERIAL_OFF();
+            }
         }
         #endif