diff --git a/variants/simpson/SimpsonKeypad.cpp b/variants/simpson/SimpsonKeypad.cpp
index f1486ea3..470be7a9 100644
--- a/variants/simpson/SimpsonKeypad.cpp
+++ b/variants/simpson/SimpsonKeypad.cpp
@@ -1,70 +1,92 @@
-#include "SimpsonKeypad.h"
-
-#include <Wire.h>
-
-namespace {
-char control_keymap[19] = {
-  SIMPSON_KEY_CANCEL, SIMPSON_KEY_UP, 0, SIMPSON_KEY_BLUETOOTH,
-  SIMPSON_KEY_LEFT, SIMPSON_KEY_ENTER, SIMPSON_KEY_RIGHT, SIMPSON_KEY_BRIGHTNESS_UP,
-  SIMPSON_KEY_SYMBOLS, SIMPSON_KEY_DOWN, 0, SIMPSON_KEY_BRIGHTNESS_DOWN,
-  SIMPSON_KEY_MESSAGES, 0, SIMPSON_KEY_FN, SIMPSON_KEY_GPS, 0, 0, 0
-};
-
-char alphabet_keymap[19] = {
-  ',', 'A', 'D', SIMPSON_KEY_BLUETOOTH,
-  'G', 'J', 'M', SIMPSON_KEY_BRIGHTNESS_UP,
-  'P', 'T', 'W', SIMPSON_KEY_BRIGHTNESS_DOWN,
-  SIMPSON_KEY_BACKSPACE, ' ', SIMPSON_KEY_FN, SIMPSON_KEY_GPS, 0, 0, 0
-};
-
-char numeric_keymap[19] = {
-  '1', '2', '3', SIMPSON_KEY_BLUETOOTH,
-  '4', '5', '6', SIMPSON_KEY_BRIGHTNESS_UP,
-  '7', '8', '9', SIMPSON_KEY_BRIGHTNESS_DOWN,
-  SIMPSON_KEY_BACKSPACE, '0', SIMPSON_KEY_FN, SIMPSON_KEY_GPS, 0, 0, 0
-};
-}
-
-bool SimpsonKeypad::begin() {
-  if (!_keypad.begin()) return false;
-  _keypad.setKeyPadMode(I2C_KEYPAD_4x4);
-  _keypad.setDebounceThreshold(50);
-  loadModeMap();
-  _ready = true;
-  return true;
-}
-
-void SimpsonKeypad::loadModeMap() {
-  switch (_mode) {
-    case SIMPSON_KEYPAD_CONTROL:
-      _keypad.loadKeyMap(control_keymap);
-      break;
-    case SIMPSON_KEYPAD_ABC:
-    case SIMPSON_KEYPAD_ABC_UPPER:
-      _keypad.loadKeyMap(alphabet_keymap);
-      break;
-    case SIMPSON_KEYPAD_NUMERIC:
-      _keypad.loadKeyMap(numeric_keymap);
-      break;
-  }
-}
-
-uint8_t SimpsonKeypad::poll() {
-  if (!_ready) return SIMPSON_KEY_NONE;
-
-  uint8_t key = _keypad.getChar();
-  if (key == I2C_KEYPAD_THRESHOLD) return SIMPSON_KEY_NONE;
-  if (key == SIMPSON_KEY_NONE) {
-    _last_key = SIMPSON_KEY_NONE;
-    return SIMPSON_KEY_NONE;
-  }
-  if (key == _last_key) return SIMPSON_KEY_NONE;
-  _last_key = key;
-
-  if (key == SIMPSON_KEY_FN) {
-    _mode = static_cast<SimpsonKeypadMode>((_mode + 1) % 4);
-    loadModeMap();
-    return SIMPSON_KEY_MODE_CHANGED;
-  }
-  return key;
-}
+#include "SimpsonKeypad.h"
+
+static const uint32_t SIMPSON_LONG_PRESS_MS = 1200;
+
+#include <Wire.h>
+
+namespace {
+char control_keymap[19] = {
+  SIMPSON_KEY_CANCEL, SIMPSON_KEY_UP, 0, SIMPSON_KEY_BLUETOOTH,
+  SIMPSON_KEY_LEFT, SIMPSON_KEY_ENTER, SIMPSON_KEY_RIGHT, SIMPSON_KEY_BRIGHTNESS_UP,
+  SIMPSON_KEY_SYMBOLS, SIMPSON_KEY_DOWN, 0, SIMPSON_KEY_BRIGHTNESS_DOWN,
+  SIMPSON_KEY_MESSAGES, 0, SIMPSON_KEY_FN, SIMPSON_KEY_GPS, 0, 0, 0
+};
+
+char alphabet_keymap[19] = {
+  ',', 'A', 'D', SIMPSON_KEY_BLUETOOTH,
+  'G', 'J', 'M', SIMPSON_KEY_BRIGHTNESS_UP,
+  'P', 'T', 'W', SIMPSON_KEY_BRIGHTNESS_DOWN,
+  SIMPSON_KEY_BACKSPACE, ' ', SIMPSON_KEY_FN, SIMPSON_KEY_GPS, 0, 0, 0
+};
+
+char numeric_keymap[19] = {
+  '1', '2', '3', SIMPSON_KEY_BLUETOOTH,
+  '4', '5', '6', SIMPSON_KEY_BRIGHTNESS_UP,
+  '7', '8', '9', SIMPSON_KEY_BRIGHTNESS_DOWN,
+  SIMPSON_KEY_BACKSPACE, '0', SIMPSON_KEY_FN, SIMPSON_KEY_GPS, 0, 0, 0
+};
+}
+
+bool SimpsonKeypad::begin() {
+  if (!_keypad.begin()) return false;
+  _keypad.setKeyPadMode(I2C_KEYPAD_4x4);
+  _keypad.setDebounceThreshold(50);
+  loadModeMap();
+  _ready = true;
+  return true;
+}
+
+void SimpsonKeypad::loadModeMap() {
+  switch (_mode) {
+    case SIMPSON_KEYPAD_CONTROL:
+      _keypad.loadKeyMap(control_keymap);
+      break;
+    case SIMPSON_KEYPAD_ABC:
+    case SIMPSON_KEYPAD_ABC_UPPER:
+      _keypad.loadKeyMap(alphabet_keymap);
+      break;
+    case SIMPSON_KEYPAD_NUMERIC:
+      _keypad.loadKeyMap(numeric_keymap);
+      break;
+  }
+}
+
+uint8_t SimpsonKeypad::poll() {
+  if (!_ready) return SIMPSON_KEY_NONE;
+
+  uint8_t key = _keypad.getChar();
+  if (key == I2C_KEYPAD_THRESHOLD) return SIMPSON_KEY_NONE;
+  if (key == SIMPSON_KEY_NONE) {
+    if (_last_key == SIMPSON_KEY_ENTER && !_enter_long_sent) {
+      _last_key = SIMPSON_KEY_NONE;
+      _enter_pressed_at = 0;
+      return SIMPSON_KEY_ENTER;
+    }
+    _last_key = SIMPSON_KEY_NONE;
+    _enter_pressed_at = 0;
+    _enter_long_sent = false;
+    return SIMPSON_KEY_NONE;
+  }
+  if (key == SIMPSON_KEY_ENTER && _last_key == SIMPSON_KEY_ENTER) {
+    if (!_enter_long_sent && millis() - _enter_pressed_at >= SIMPSON_LONG_PRESS_MS) {
+      _enter_long_sent = true;
+      return SIMPSON_KEY_ENTER_LONG;
+    }
+    return SIMPSON_KEY_NONE;
+  }
+  if (key == _last_key) return SIMPSON_KEY_NONE;
+  _last_key = key;
+
+  if (key == SIMPSON_KEY_ENTER) {
+    _enter_pressed_at = millis();
+    _enter_long_sent = false;
+    return SIMPSON_KEY_NONE;
+  }
+
+  if (key == SIMPSON_KEY_FN) {
+    _mode = static_cast<SimpsonKeypadMode>((_mode + 1) % 4);
+    loadModeMap();
+    return SIMPSON_KEY_MODE_CHANGED;
+  }
+  return key;
+}
diff --git a/variants/simpson/SimpsonKeypad.h b/variants/simpson/SimpsonKeypad.h
index 5fb5e2d5..63a4c52b 100644
--- a/variants/simpson/SimpsonKeypad.h
+++ b/variants/simpson/SimpsonKeypad.h
@@ -1,49 +1,52 @@
-#pragma once
-
-#include <Arduino.h>
-#include <I2CKeyPad.h>
-
-#ifndef SIMPSON_KEYPAD_ADDR
-  #define SIMPSON_KEYPAD_ADDR 0x20
-#endif
-
-enum SimpsonKeypadMode : uint8_t {
-  SIMPSON_KEYPAD_CONTROL,
-  SIMPSON_KEYPAD_ABC,
-  SIMPSON_KEYPAD_ABC_UPPER,
-  SIMPSON_KEYPAD_NUMERIC
-};
-
-enum SimpsonKeypadKey : uint8_t {
-  SIMPSON_KEY_NONE = 0,
-  SIMPSON_KEY_CANCEL = 1,
-  SIMPSON_KEY_UP,
-  SIMPSON_KEY_BLUETOOTH,
-  SIMPSON_KEY_LEFT,
-  SIMPSON_KEY_ENTER,
-  SIMPSON_KEY_RIGHT,
-  SIMPSON_KEY_BRIGHTNESS_UP,
-  SIMPSON_KEY_SYMBOLS,
-  SIMPSON_KEY_DOWN,
-  SIMPSON_KEY_BRIGHTNESS_DOWN,
-  SIMPSON_KEY_MESSAGES,
-  SIMPSON_KEY_FN,
-  SIMPSON_KEY_GPS,
-  SIMPSON_KEY_BACKSPACE,
-  SIMPSON_KEY_MODE_CHANGED
-};
-
-class SimpsonKeypad {
-  I2CKeyPad _keypad;
-  SimpsonKeypadMode _mode = SIMPSON_KEYPAD_CONTROL;
-  uint8_t _last_key = SIMPSON_KEY_NONE;
-  bool _ready = false;
-
-  void loadModeMap();
-
-public:
-  SimpsonKeypad() : _keypad(SIMPSON_KEYPAD_ADDR, &Wire) {}
-  bool begin();
-  uint8_t poll();
-  SimpsonKeypadMode mode() const { return _mode; }
-};
+#pragma once
+
+#include <Arduino.h>
+#include <I2CKeyPad.h>
+
+#ifndef SIMPSON_KEYPAD_ADDR
+  #define SIMPSON_KEYPAD_ADDR 0x20
+#endif
+
+enum SimpsonKeypadMode : uint8_t {
+  SIMPSON_KEYPAD_CONTROL,
+  SIMPSON_KEYPAD_ABC,
+  SIMPSON_KEYPAD_ABC_UPPER,
+  SIMPSON_KEYPAD_NUMERIC
+};
+
+enum SimpsonKeypadKey : uint8_t {
+  SIMPSON_KEY_NONE = 0,
+  SIMPSON_KEY_CANCEL = 1,
+  SIMPSON_KEY_UP,
+  SIMPSON_KEY_BLUETOOTH,
+  SIMPSON_KEY_LEFT,
+  SIMPSON_KEY_ENTER,
+  SIMPSON_KEY_RIGHT,
+  SIMPSON_KEY_BRIGHTNESS_UP,
+  SIMPSON_KEY_SYMBOLS,
+  SIMPSON_KEY_DOWN,
+  SIMPSON_KEY_BRIGHTNESS_DOWN,
+  SIMPSON_KEY_MESSAGES,
+  SIMPSON_KEY_FN,
+  SIMPSON_KEY_GPS,
+  SIMPSON_KEY_BACKSPACE,
+  SIMPSON_KEY_MODE_CHANGED,
+  SIMPSON_KEY_ENTER_LONG
+};
+
+class SimpsonKeypad {
+  I2CKeyPad _keypad;
+  SimpsonKeypadMode _mode = SIMPSON_KEYPAD_CONTROL;
+  uint8_t _last_key = SIMPSON_KEY_NONE;
+  uint32_t _enter_pressed_at = 0;
+  bool _enter_long_sent = false;
+  bool _ready = false;
+
+  void loadModeMap();
+
+public:
+  SimpsonKeypad() : _keypad(SIMPSON_KEYPAD_ADDR, &Wire) {}
+  bool begin();
+  uint8_t poll();
+  SimpsonKeypadMode mode() const { return _mode; }
+};
diff --git a/variants/simpson/platformio.ini b/variants/simpson/platformio.ini
index 8ecd4ea1..1d1fbc9d 100644
--- a/variants/simpson/platformio.ini
+++ b/variants/simpson/platformio.ini
@@ -1,22 +1,23 @@
-[Simpson]
-extends = Promicro
-build_unflags = -D PIN_GPS_RX=3 -D PIN_GPS_TX=4 -D ENV_INCLUDE_AHTX0=1 -D ENV_INCLUDE_BME280=1 -D ENV_INCLUDE_BMP280=1 -D ENV_INCLUDE_INA3221=1 -D ENV_INCLUDE_INA219=1 -D ENV_INCLUDE_INA226=1
-build_flags = ${Promicro.build_flags}
-  -I variants/simpson
-  -D SIMPSON
-  -D PIN_BUZZER=0
-  -D PIN_GPS_TX=3
-  -D PIN_GPS_RX=4
-  -D PIN_VIBRATION=1
-  -D ADC_MULTIPLIER=1.71
-  -D SIMPSON_KEYPAD_ADDR=0x20
-  -D DISPLAY_ROTATION=2
-  -D ENV_SKIP_GPS_DETECT
-build_src_filter = ${nrf52_base.build_src_filter}
-  +<helpers/sensors>
-  +<../variants/simpson>
-  +<../variants/promicro/target.cpp>
-  +<../variants/promicro/PromicroBoard.cpp>
-lib_deps = ${Promicro.lib_deps}
-  adafruit/Adafruit SH110X @ ^2.1.13
-  RobTillaart/I2CKeyPad @ ^0.5.2
+[Simpson]
+extends = Promicro
+build_unflags = -D PIN_GPS_RX=3 -D PIN_GPS_TX=4 -D ENV_INCLUDE_AHTX0=1 -D ENV_INCLUDE_BME280=1 -D ENV_INCLUDE_BMP280=1 -D ENV_INCLUDE_INA3221=1 -D ENV_INCLUDE_INA219=1 -D ENV_INCLUDE_INA226=1
+build_flags = ${Promicro.build_flags}
+  -I variants/simpson
+  -D SIMPSON
+  -D PIN_BUZZER=0
+  -D PIN_GPS_TX=3
+  -D PIN_GPS_RX=4
+  -D PIN_VIBRATION=1
+  -D ADC_MULTIPLIER=1.71
+  -D SIMPSON_KEYPAD_ADDR=0x20
+  -D DISPLAY_ROTATION=2
+  -D ENV_INCLUDE_GPS=1
+  -D ENV_SKIP_GPS_DETECT
+build_src_filter = ${nrf52_base.build_src_filter}
+  +<helpers/sensors>
+  +<../variants/simpson>
+  +<../variants/promicro/target.cpp>
+  +<../variants/promicro/PromicroBoard.cpp>
+lib_deps = ${Promicro.lib_deps}
+  adafruit/Adafruit SH110X @ ^2.1.13
+  RobTillaart/I2CKeyPad @ ^0.5.2