diff --git a/IR_Encoder.cpp b/IR_Encoder.cpp
index bd56b2d..d2a9582 100644
--- a/IR_Encoder.cpp
+++ b/IR_Encoder.cpp
@@ -45,11 +45,11 @@ HardwareTimer* IR_Encoder::IR_Timer = nullptr;
 
 inline HardwareTimer* IR_Encoder::get_IR_Timer(){return IR_Encoder::IR_Timer;}
 
-void IR_Encoder::begin(HardwareTimer* timer, uint8_t channel, IRQn_Type IRQn, uint8_t priority){
+void IR_Encoder::begin(HardwareTimer* timer, uint8_t channel, IRQn_Type IRQn, uint8_t priority, void(*isrCallback)()){
     IR_Timer = timer;
     if(IR_Timer == nullptr) return;
     IR_Timer->setOverflow(carrierFrec * 2, HERTZ_FORMAT);
-    IR_Timer->attachInterrupt(channel, IR_Encoder::isr);
+    IR_Timer->attachInterrupt(channel, (isrCallback == nullptr ? IR_Encoder::isr : isrCallback));
     NVIC_SetPriority(IRQn, priority);
     IR_Timer->resume();
 }
diff --git a/IR_Encoder.h b/IR_Encoder.h
index 21bac76..e28914a 100644
--- a/IR_Encoder.h
+++ b/IR_Encoder.h
@@ -21,7 +21,7 @@ public:
     /// @param decPair Приёмник, для которого отключается приём в момент передачи передатчиком
     IR_Encoder(uint8_t pin, uint16_t addr = 0, IR_DecoderRaw *decPair = nullptr, bool autoHandle = true);
     static void isr();
-    static void begin(HardwareTimer* IR_Timer, uint8_t channel, IRQn_Type IRQn, uint8_t priority);
+    static void begin(HardwareTimer* timer, uint8_t channel, IRQn_Type IRQn, uint8_t priority, void(*isrCallback)() = nullptr);
     static HardwareTimer* get_IR_Timer();
 
     void enable();