diff --git a/CMakeLists.txt b/CMakeLists.txt
index da19081d..7e342b7c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.0)
 cmake_policy(SET CMP0017 NEW) # need include() with .cmake
 project(PIP)
 set(PIP_MAJOR    3)
-set(PIP_MINOR    20)
+set(PIP_MINOR    21)
 set(PIP_REVISION 0)
 set(PIP_SUFFIX   )
 set(PIP_COMPANY  SHS)
diff --git a/libs/main/io_devices/piiodevice.cpp b/libs/main/io_devices/piiodevice.cpp
index b517bbdb..5f3c259b 100644
--- a/libs/main/io_devices/piiodevice.cpp
+++ b/libs/main/io_devices/piiodevice.cpp
@@ -226,6 +226,11 @@ void PIIODevice::stopThreadedRead() {
 }
 
 
+void PIIODevice::terminateThreadedRead() {
+	read_thread.terminate();
+}
+
+
 bool PIIODevice::waitThreadedReadFinished(int timeout_ms) {
 	return read_thread.waitForFinish(timeout_ms);
 }
@@ -247,6 +252,11 @@ void PIIODevice::stopThreadedWrite() {
 }
 
 
+void PIIODevice::terminateThreadedWrite() {
+	write_thread.terminate();
+}
+
+
 bool PIIODevice::waitThreadedWriteFinished(int timeout_ms) {
 	return write_thread.waitForFinish(timeout_ms);
 }
diff --git a/libs/main/io_devices/piiodevice.h b/libs/main/io_devices/piiodevice.h
index c434e82f..667a8e62 100644
--- a/libs/main/io_devices/piiodevice.h
+++ b/libs/main/io_devices/piiodevice.h
@@ -205,6 +205,10 @@ public:
 	//! \~russian Устанавливает задержку в миллисекундах между вызовами \a open() если переоткрытие активно
 	void setReopenTimeout(int msecs);
 
+	//! \~english Set timeout between \a open() tryings if reopen is enabled
+	//! \~russian Устанавливает задержку между вызовами \a open() если переоткрытие активно
+	void setReopenTimeout(PISystemTime timeout) { setReopenTimeout(timeout.toMilliseconds()); }
+
 	//! \~english Returns reopen enable
 	//! \~russian Возвращает активно ли переоткрытие
 	bool isReopenEnabled() const { return property("reopenEnabled").toBool(); }
@@ -255,10 +259,21 @@ public:
 	//! \~russian Останавливает потоковое чтение.
 	void stopThreadedRead();
 
+	//! \~english Terminate threaded read.
+	//! \~russian Прерывает потоковое чтение.
+	//! \~\warning
+	//! \~english Try not to use! This method may cause memory corruption!
+	//! \~russian Старайтесь не использовать! Этот метод может привести к повреждению памяти!
+	void terminateThreadedRead();
+
 	//! \~english Wait for threaded read finish no longer than "timeout_ms" milliseconds.
 	//! \~russian Ожидает завершения потокового чтения в течении не более "timeout_ms" миллисекунд.
 	bool waitThreadedReadFinished(int timeout_ms = -1);
 
+	//! \~english Wait for threaded read finish no longer than "timeout".
+	//! \~russian Ожидает завершения потокового чтения в течении не более "timeout".
+	bool waitThreadedReadFinished(PISystemTime timeout) { return waitThreadedReadFinished(timeout.toMilliseconds()); }
+
 
 	//! \~english Returns if threaded write is started
 	//! \~russian Возвращает запущен ли поток записи
@@ -272,10 +287,21 @@ public:
 	//! \~russian Останавливает потоковую запись.
 	void stopThreadedWrite();
 
+	//! \~english Terminate threaded write.
+	//! \~russian Прерывает потоковую запись.
+	//! \~\warning
+	//! \~english Try not to use! This method may cause memory corruption!
+	//! \~russian Старайтесь не использовать! Этот метод может привести к повреждению памяти!
+	void terminateThreadedWrite();
+
 	//! \~english Wait for threaded write finish no longer than "timeout_ms" milliseconds.
 	//! \~russian Ожидает завершения потоковой записи в течении не более "timeout_ms" миллисекунд.
 	bool waitThreadedWriteFinished(int timeout_ms = -1);
 
+	//! \~english Wait for threaded write finish no longer than "timeout".
+	//! \~russian Ожидает завершения потоковой записи в течении не более "timeout".
+	bool waitThreadedWriteFinished(PISystemTime timeout) { return waitThreadedWriteFinished(timeout.toMilliseconds()); }
+
 	//! \~english Clear threaded write task queue
 	//! \~russian Очищает очередь потоковой записи
 	void clearThreadedWriteQueue();
@@ -293,6 +319,10 @@ public:
 	//! \~russian Останавливает потоковое чтение и запись и ожидает завершения.
 	void stopAndWait(int timeout_ms = -1);
 
+	//! \~english Stop both threaded read and threaded write and wait for finish.
+	//! \~russian Останавливает потоковое чтение и запись и ожидает завершения.
+	void stopAndWait(PISystemTime timeout) { return stopAndWait(timeout.toMilliseconds()); }
+
 	//! \~english Interrupt blocking operation.
 	//! \~russian Прерывает блокирующую операцию.
 	virtual void interrupt() {}
@@ -331,6 +361,10 @@ public:
 	//! Таймаут должен быть больше 0
 	PIByteArray readForTime(double timeout_ms);
 
+	//! \~english Read from device for "timeout" and return readed data as PIByteArray.
+	//! \~russian Читает из устройства в течении "timeout" и возвращает данные как PIByteArray.
+	PIByteArray readForTime(PISystemTime timeout) { return readForTime(timeout.toMilliseconds()); }
+
 
 	//! \~english Add task to threaded write queue and return task ID
 	//! \~russian Добавляет данные в очередь на потоковую запись и возвращает ID задания
@@ -500,14 +534,14 @@ protected:
 	//! \~english Reimplement this function to read from your device
 	//! \~russian Переопределите для чтения данных из устройства
 	virtual ssize_t readDevice(void * read_to, ssize_t max_size) {
-		piCoutObj << "\"read\" is not implemented!";
+		piCoutObj << "\"readDevice\" is not implemented!";
 		return -2;
 	}
 
 	//! \~english Reimplement this function to write to your device
 	//! \~russian Переопределите для записи данных в устройство
 	virtual ssize_t writeDevice(const void * data, ssize_t max_size) {
-		piCoutObj << "\"write\" is not implemented!";
+		piCoutObj << "\"writeDevice\" is not implemented!";
 		return -2;
 	}
 
@@ -555,7 +589,7 @@ protected:
 
 	bool isThreadedReadStopping() const { return read_thread.isStopping(); }
 
-	DeviceMode mode_;
+	DeviceMode mode_ = ReadOnly;
 	DeviceOptions options_;
 	ReadRetFunc func_read = nullptr;
 	std::atomic_bool opened_;
diff --git a/libs/main/io_utils/pidiagnostics.cpp b/libs/main/io_utils/pidiagnostics.cpp
index 2d8575ca..21beb7d5 100644
--- a/libs/main/io_utils/pidiagnostics.cpp
+++ b/libs/main/io_utils/pidiagnostics.cpp
@@ -38,24 +38,11 @@
 
 
 PIDiagnostics::State::State() {
-	immediate_freq = integral_freq = 0.f;
-	received_packets_per_sec       = 0ull;
-	received_packets               = 0ull;
-	received_packets_wrong         = 0ull;
-	received_bytes_per_sec         = 0ull;
-	received_bytes                 = 0ull;
-	received_bytes_wrong           = 0ull;
-	sended_packets_per_sec         = 0ull;
-	sended_packets                 = 0ull;
-	sended_bytes_per_sec           = 0ull;
-	sended_bytes                   = 0ull;
 	receive_speed = send_speed = PIString::readableSize(0) + "/s";
-	quality                    = PIDiagnostics::Unknown;
 }
 
 
 PIDiagnostics::PIDiagnostics(bool start_): PITimer(/*PITimer::Pool*/) {
-	disconn_ = 0.;
 	// piCout << "PIDiagnostics construct";
 	setInterval(100);
 	reset();
@@ -104,6 +91,20 @@ PIString PIDiagnostics::sendSpeed() const {
 }
 
 
+void PIDiagnostics::start() {
+	PITimer::start(100.);
+	changeDisconnectTimeout(disconn_);
+}
+
+
+void PIDiagnostics::start(double msecs) {
+	if (msecs > 0.) {
+		PITimer::start(msecs);
+		changeDisconnectTimeout(disconn_);
+	}
+}
+
+
 void PIDiagnostics::reset() {
 	mutex_state.lock();
 	cur_state = State();
diff --git a/libs/main/io_utils/pidiagnostics.h b/libs/main/io_utils/pidiagnostics.h
index 3cab63f4..9140903c 100644
--- a/libs/main/io_utils/pidiagnostics.h
+++ b/libs/main/io_utils/pidiagnostics.h
@@ -54,24 +54,23 @@ public:
 	//! Information about current diagnostics state
 	struct PIP_EXPORT State {
 		State();
-		float immediate_freq;
-		float integral_freq;
-		ullong received_packets_per_sec;
-		ullong received_packets;
-		ullong received_packets_wrong;
-		ullong received_bytes_per_sec;
-		ullong received_bytes;
-		ullong received_bytes_wrong;
-		ullong sended_packets_per_sec;
-		ullong sended_packets;
-		ullong sended_bytes_per_sec;
-		ullong sended_bytes;
+		float immediate_freq            = 0.f;
+		float integral_freq             = 0.f;
+		ullong received_packets_per_sec = 0ull;
+		ullong received_packets         = 0ull;
+		ullong received_packets_wrong   = 0ull;
+		ullong received_bytes_per_sec   = 0ull;
+		ullong received_bytes           = 0ull;
+		ullong received_bytes_wrong     = 0ull;
+		ullong sended_packets_per_sec   = 0ull;
+		ullong sended_packets           = 0ull;
+		ullong sended_bytes_per_sec     = 0ull;
+		ullong sended_bytes             = 0ull;
 		PIString receive_speed;
 		PIString send_speed;
-		PIDiagnostics::Quality quality;
+		PIDiagnostics::Quality quality = PIDiagnostics::Unknown;
 	};
 
-
 	//! Returns current state
 	PIDiagnostics::State state() const;
 
@@ -81,6 +80,9 @@ public:
 	//! Returns period of full disconnect in seconds and period of averaging frequency
 	void setDisconnectTimeout(float s) { setProperty("disconnectTimeout", s); }
 
+	//! Returns period of full disconnect and period of averaging frequency
+	void setDisconnectTimeout(PISystemTime tm) { setProperty("disconnectTimeout", tm.toSeconds()); }
+
 	//! Returns connection quality
 	PIDiagnostics::Quality quality() const;
 
@@ -91,16 +93,8 @@ public:
 	PIString sendSpeed() const;
 
 
-	EVENT_HANDLER0(void, start) {
-		PITimer::start(100.);
-		changeDisconnectTimeout(disconn_);
-	}
-	EVENT_HANDLER1(void, start, double, msecs) {
-		if (msecs > 0.) {
-			PITimer::start(msecs);
-			changeDisconnectTimeout(disconn_);
-		}
-	}
+	EVENT_HANDLER0(void, start);
+	EVENT_HANDLER1(void, start, double, msecs);
 	EVENT_HANDLER0(void, reset);
 
 	EVENT_HANDLER1(void, received, int, size) { received(size, true); }
@@ -135,16 +129,11 @@ public:
 
 private:
 	struct PIP_EXPORT Entry {
-		Entry() {
-			bytes_ok = bytes_fail = 0;
-			cnt_ok = cnt_fail = 0;
-			empty             = true;
-		}
-		ullong bytes_ok;
-		ullong bytes_fail;
-		uint cnt_ok;
-		uint cnt_fail;
-		bool empty;
+		ullong bytes_ok   = 0;
+		ullong bytes_fail = 0;
+		uint cnt_ok       = 0;
+		uint cnt_fail     = 0;
+		bool empty        = true;
 	};
 	friend bool operator==(const PIDiagnostics::Entry & f, const PIDiagnostics::Entry & s);
 	friend bool operator!=(const PIDiagnostics::Entry & f, const PIDiagnostics::Entry & s);
@@ -156,7 +145,7 @@ private:
 	void changeDisconnectTimeout(float disct);
 
 	PIQueue<Entry> history_rec, history_send;
-	float disconn_;
+	float disconn_ = 0.f;
 	State cur_state;
 	mutable PIMutex mutex_state;
 };
diff --git a/libs/main/thread/pithread.cpp b/libs/main/thread/pithread.cpp
index 14dd5061..043beb6a 100644
--- a/libs/main/thread/pithread.cpp
+++ b/libs/main/thread/pithread.cpp
@@ -116,7 +116,7 @@ __THREAD_FUNC_RET__ thread_function_once(void * t) {
 //! while (isRunning()) {     // while not stop()
 //!     virtual run()
 //!     ThreadFunc()          // Slot or lambda
-//!     piMSleep(timer_delay) // if timer_delay > 0
+//!     piMSleep(loop_delay)  // if loop_delay > 0
 //! }
 //! event stopped()
 //! virtual end()
@@ -216,7 +216,7 @@ __THREAD_FUNC_RET__ thread_function_once(void * t) {
 //! \~russian \section PIThread_sec1 Использование без наследования
 //! \~english
 //! You can use %PIThread without subclassing by using "ThreadFunc" pointer
-//! that can be set from constructor or by overloaded function \a start(ThreadFunc func, int timer_delay).
+//! that can be set from constructor or by overloaded function \a start(ThreadFunc func, int loop_delay).
 //! If "func" if not null this function will be executed after \a run().
 //!
 //! ThreadFunc is any static function with format "void func(void * data)", or
@@ -354,18 +354,18 @@ __THREAD_FUNC_RET__ thread_function_once(void * t) {
 //!
 
 
-//! \fn bool PIThread::start(int timer_delay = -1)
+//! \fn bool PIThread::start(int loop_delay = -1)
 //! \~\details
 //! \~english
 //! Start execution of \a run() in internal loop with
-//! "timer_delay" delay in milliseconds. If "timer_delay" <= 0
+//! "loop_delay" delay in milliseconds. If "loop_delay" <= 0
 //! this is no delay in loop. Thread also exec external function
 //! set by \a setSlot() if it`s not null.
 //! \return \c false if thread already started or can`t start thread
 //!
 //! \~russian
 //! Начинает выполнение \a run() во внутреннем цикле
-//! с задержкой "timer_delay" миллисекунд. Если "timer_delay" <= 0
+//! с задержкой "loop_delay" миллисекунд. Если "loop_delay" <= 0
 //! то задержки не будет. Также поток вызывает внешний метод,
 //! заданный через \a setSlot(), если он существует.
 //! \return \c false если поток уже запущен или не может запуститься
@@ -525,51 +525,43 @@ __PIThreadCollection_Initializer__::~__PIThreadCollection_Initializer__() {
 
 PRIVATE_DEFINITION_START(PIThread)
 #if defined(WINDOWS)
-	void * thread;
+	void * thread = nullptr;
 #elif defined(FREERTOS)
 	TaskHandle_t thread;
 #else
-	pthread_t thread;
+	pthread_t thread = 0;
 	sched_param sparam;
 #endif
 PRIVATE_DEFINITION_END(PIThread)
 
 
-PIThread::PIThread(void * data, ThreadFunc func, bool startNow, int timer_delay): PIObject() {
+PIThread::PIThread(void * data, ThreadFunc func, bool startNow, int loop_delay): PIObject() {
 	PIINTROSPECTION_THREAD_NEW(this);
-	tid_            = -1;
-	PRIVATE->thread = 0;
-	data_           = data;
-	ret_func        = func;
+	data_       = data;
+	ret_func    = func;
 	terminating = running_ = lockRun = false;
 	priority_                        = piNormal;
-	delay_                           = timer_delay;
-	if (startNow) start(timer_delay);
+	delay_                           = loop_delay;
+	if (startNow) start(loop_delay);
 }
 
 
-PIThread::PIThread(std::function<void()> func, bool startNow, int timer_delay) {
+PIThread::PIThread(std::function<void()> func, bool startNow, int loop_delay) {
 	PIINTROSPECTION_THREAD_NEW(this);
-	tid_            = -1;
-	PRIVATE->thread = 0;
-	data_           = 0;
-	ret_func        = [func](void *) { func(); };
+	ret_func    = [func](void *) { func(); };
 	terminating = running_ = lockRun = false;
 	priority_                        = piNormal;
-	delay_                           = timer_delay;
-	if (startNow) start(timer_delay);
+	delay_                           = loop_delay;
+	if (startNow) start(loop_delay);
 }
 
 
-PIThread::PIThread(bool startNow, int timer_delay): PIObject() {
+PIThread::PIThread(bool startNow, int loop_delay): PIObject() {
 	PIINTROSPECTION_THREAD_NEW(this);
-	tid_            = -1;
-	PRIVATE->thread = 0;
-	ret_func        = 0;
 	terminating = running_ = lockRun = false;
 	priority_                        = piNormal;
-	delay_                           = timer_delay;
-	if (startNow) start(timer_delay);
+	delay_                           = loop_delay;
+	if (startNow) start(loop_delay);
 }
 
 
@@ -599,6 +591,24 @@ PIThread::~PIThread() {
 }
 
 
+bool PIThread::start(ThreadFunc func, int loop_delay) {
+	ret_func = func;
+	return start(loop_delay);
+}
+
+
+bool PIThread::start(std::function<void()> func, int loop_delay) {
+	ret_func = [func](void *) { func(); };
+	return start(loop_delay);
+}
+
+
+bool PIThread::startOnce(ThreadFunc func) {
+	ret_func = func;
+	return startOnce();
+}
+
+
 void PIThread::stopAndWait(int timeout_ms) {
 	stop();
 	waitForFinish(timeout_ms);
@@ -611,9 +621,9 @@ void PIThread::stop() {
 }
 
 
-bool PIThread::start(int timer_delay) {
+bool PIThread::start(int loop_delay) {
 	if (running_) return false;
-	delay_ = timer_delay;
+	delay_ = loop_delay;
 	return _startThread((void *)thread_function);
 }
 
diff --git a/libs/main/thread/pithread.h b/libs/main/thread/pithread.h
index 6b043679..078d569b 100644
--- a/libs/main/thread/pithread.h
+++ b/libs/main/thread/pithread.h
@@ -104,22 +104,16 @@ public:
 	};
 
 	EVENT_HANDLER0(bool, start) { return start(-1); }
-	EVENT_HANDLER1(bool, start, int, timer_delay);
+	EVENT_HANDLER1(bool, start, int, loop_delay);
+	bool start(PISystemTime loop_delay) { return start(loop_delay.toMilliseconds()); }
 	bool start(ThreadFunc func) { return start(func, -1); }
-	bool start(ThreadFunc func, int timer_delay) {
-		ret_func = func;
-		return start(timer_delay);
-	}
+	bool start(ThreadFunc func, int loop_delay);
+	bool start(ThreadFunc func, PISystemTime loop_delay) { return start(func, loop_delay.toMilliseconds()); }
 	bool start(std::function<void()> func) { return start(func, -1); }
-	bool start(std::function<void()> func, int timer_delay) {
-		ret_func = [func](void *) { func(); };
-		return start(timer_delay);
-	}
+	bool start(std::function<void()> func, int loop_delay);
+	bool start(std::function<void()> func, PISystemTime loop_delay) { return start(func, loop_delay.toMilliseconds()); }
 	EVENT_HANDLER0(bool, startOnce);
-	EVENT_HANDLER1(bool, startOnce, ThreadFunc, func) {
-		ret_func = func;
-		return startOnce();
-	}
+	EVENT_HANDLER1(bool, startOnce, ThreadFunc, func);
 	EVENT_HANDLER0(void, stop);
 	EVENT_HANDLER0(void, terminate);
 
@@ -127,6 +121,10 @@ public:
 	//! \~russian Останавливает поток и ожидает завершения.
 	void stopAndWait(int timeout_ms = -1);
 
+	//! \~english Stop thread and wait for finish.
+	//! \~russian Останавливает поток и ожидает завершения.
+	void stopAndWait(PISystemTime timeout) { stopAndWait(timeout.toMilliseconds()); }
+
 	//! \~english Set common data passed to external function
 	//! \~russian Устанавливает данные, передаваемые в функцию потока
 	void setData(void * d) { data_ = d; }
@@ -200,7 +198,7 @@ public:
 	//! \handlers
 	//! \{
 
-	//! \fn bool start(int timer_delay = -1)
+	//! \fn bool start(int loop_delay = -1)
 	//! \brief
 	//! \~english Start thread
 	//! \~russian Запускает поток
@@ -268,8 +266,8 @@ protected:
 	//! \~russian Метод выполняется один раз при старте потока
 	virtual void begin() { ; }
 
-	//! \~english Function executed at every "timer_delay" msecs until thread was stopped
-	//! \~russian Метод выполняется каждые "timer_delay" миллисекунд
+	//! \~english Function executed at every "loop_delay" msecs until thread was stopped
+	//! \~russian Метод выполняется каждые "loop_delay" миллисекунд
 	virtual void run() { ; }
 
 	//! \~english Function executed once at the end of thread
@@ -278,12 +276,12 @@ protected:
 
 	std::atomic_bool terminating, running_, lockRun;
 	int delay_, policy_;
-	llong tid_;
-	void * data_;
+	llong tid_   = -1;
+	void * data_ = nullptr;
 	mutable PIMutex thread_mutex;
 	PITimeMeasurer tmf_, tms_, tmr_;
-	PIThread::Priority priority_;
-	ThreadFunc ret_func;
+	PIThread::Priority priority_ = piNormal;
+	ThreadFunc ret_func          = nullptr;
 	PRIVATE_DECLARATION(PIP_EXPORT)
 
 private:
diff --git a/libs/main/thread/pitimer.cpp b/libs/main/thread/pitimer.cpp
index 16cb36a0..f43714ff 100644
--- a/libs/main/thread/pitimer.cpp
+++ b/libs/main/thread/pitimer.cpp
@@ -120,11 +120,7 @@
 
 
 _PITimerBase::_PITimerBase() {
-	interval_      = 1000;
-	deferred_delay = 0.;
-	running_ = deferred_ = deferred_mode = false;
-	tfunc                                = 0;
-	parent                               = 0;
+	running_ = false;
 }
 
 
@@ -593,9 +589,6 @@ bool PITimer::isStopped() const {
 void PITimer::initFirst() {
 	lockRun    = false;
 	callEvents = true;
-	data_t     = 0;
-	ret_func   = 0;
-	imp        = 0;
 	setProperty("interval", 0.);
 }
 
@@ -714,6 +707,20 @@ void PITimer::startDeferred(double interval_ms, PIDateTime start_datetime) {
 }
 
 
+void PITimer::addDelimiter(int delim, std::function<void(void *)> slot) {
+	delims << Delimiter([slot](void * d, int) { slot(d); }, delim);
+}
+
+
+void PITimer::removeDelimiter(int delim) {
+	for (int i = 0; i < delims.size_s(); ++i)
+		if (delims[i].delim == delim) {
+			delims.remove(i);
+			i--;
+		}
+}
+
+
 bool PITimer::restart() {
 	init();
 	imp->stop();
diff --git a/libs/main/thread/pitimer.h b/libs/main/thread/pitimer.h
index 1f74cba7..89daf598 100644
--- a/libs/main/thread/pitimer.h
+++ b/libs/main/thread/pitimer.h
@@ -57,15 +57,15 @@ public:
 	bool stop();
 
 	typedef void (*TickFunc)(PITimer *);
-	TickFunc tfunc;
-	PITimer * parent;
+	TickFunc tfunc   = nullptr;
+	PITimer * parent = nullptr;
 
 protected:
 	virtual bool startTimer(double interval_ms) = 0;
 	virtual bool stopTimer()                    = 0;
 
-	double interval_, deferred_delay;
-	bool deferred_, deferred_mode; // mode: true - date, false - delay
+	double interval_ = 1000., deferred_delay = 0.;
+	bool deferred_ = false, deferred_mode = false; // mode: true - date, false - delay
 	std::atomic_bool running_;
 	PIDateTime deferred_datetime;
 };
@@ -131,6 +131,7 @@ public:
 	double interval() const;
 
 	EVENT_HANDLER1(void, setInterval, double, ms);
+	void setInterval(PISystemTime interval) { setInterval(interval.toMilliseconds()); }
 
 	//! \~english Returns if timer is started
 	//! \~russian Возвращает работает ли таймер
@@ -143,6 +144,7 @@ public:
 	EVENT_HANDLER0(bool, start);
 	EVENT_HANDLER1(bool, start, double, interval_ms_d);
 	bool start(int interval_ms_i);
+	bool start(PISystemTime interval) { return start(interval.toMilliseconds()); }
 	EVENT_HANDLER0(bool, restart);
 
 
@@ -212,19 +214,11 @@ public:
 
 	//! \~english Add frequency delimiter "delim" with optional delimiter slot "slot"
 	//! \~russian Добавляет делитель частоты "delim" с необязательным методом "slot"
-	void addDelimiter(int delim, std::function<void(void *)> slot) {
-		delims << Delimiter([slot](void * d, int) { slot(d); }, delim);
-	}
+	void addDelimiter(int delim, std::function<void(void *)> slot);
 
 	//! \~english Remove all frequency delimiters "delim"
 	//! \~russian Удаляет все делители частоты "delim"
-	void removeDelimiter(int delim) {
-		for (int i = 0; i < delims.size_s(); ++i)
-			if (delims[i].delim == delim) {
-				delims.remove(i);
-				i--;
-			}
-	}
+	void removeDelimiter(int delim);
 
 	EVENT_HANDLER0(void, clearDelimiters) { delims.clear(); }
 
@@ -301,11 +295,10 @@ protected:
 		Delimiter(TimerEvent slot_ = 0, int delim_ = 1) {
 			slot  = slot_;
 			delim = delim_;
-			tick  = 0;
 		}
 		TimerEvent slot;
-		int delim;
-		int tick;
+		int delim = 0;
+		int tick  = 0;
 	};
 
 	void initFirst();
@@ -318,14 +311,14 @@ protected:
 	//! Timer execution function, similar to "slot" or event \a timeout(). By default does nothing
 	virtual void tick(void * data_, int delimiter) {}
 
-	void * data_t;
+	void * data_t = nullptr;
 	std::atomic_bool lockRun, callEvents;
 	PIMutex mutex_;
-	TimerEvent ret_func;
-	TimerImplementation imp_mode;
+	TimerEvent ret_func          = nullptr;
+	TimerImplementation imp_mode = Thread;
 	PIVector<Delimiter> delims;
 
-	mutable _PITimerBase * imp;
+	mutable _PITimerBase * imp = nullptr;
 };