diff --git a/Sony_SLink.h b/Sony_SLink.h
index 508357d..2be61f7 100644
--- a/Sony_SLink.h
+++ b/Sony_SLink.h
@@ -32,6 +32,7 @@
 #define SLINK_DEVICE_CDP_CX3L   0x92 // Send commands to a Sony CDP-CX jukebox for CD Player 3 to drive number <=200
 #define SLINK_DEVICE_CDP_CX3H   0x95 // Send commands to a Sony CDP-CX jukebox for CD Player 3 to drive disc number > 200
 #define SLINK_DEVICE_CDP_CXALL  0x97 // Send commands to a Sony CDP-CX jukebox for all CD players 1, 2, 3 (200 or less disc players only)
+#define SLINK_DEVICE_TC_WE435   0xA4 // Send commands to a Sony TC-WE435 cassette player/recorder
 
 // List of commands for AMP/RECEIVER
 #define SLINK_CMD_AMP_MUTE_ON          6
@@ -72,6 +73,22 @@
 #define SLINK_CMD_CD_NEXT     8 // Next Track
 #define SLINK_CMD_CD_PREV     9 // Previous Track
 
+// List of commands for cassette player/recorder
+// commands for deck A (playback only):
+#define SLINK_CMD_TC_STOP_A     65
+#define SLINK_CMD_TC_WIND_FWD_A 74
+#define SLINK_CMD_TC_WIND_REV_A 75
+#define SLINK_CMD_TC_PLAY_FWD_A 76
+#define SLINK_CMD_TC_PLAY_REV_A 77
+#define SLINK_CMD_TC_STOP_B     1
+// commands for deck A (record and playback):
+#define SLINK_CMD_TC_PAUSE_B    2
+#define SLINK_CMD_TC_RECORD_B   7
+#define SLINK_CMD_TC_WIND_FWD_B 10
+#define SLINK_CMD_TC_WIND_REV_B 11
+#define SLINK_CMD_TC_PLAY_FWD_B 12
+#define SLINK_CMD_TC_PLAY_REV_B 13
+
 // List of parameters for SLINK_CMD_AMP_SET_INPUT_CHAN
 #define SLINK_CMDP_IN_TUNER   0
 #define SLINK_CMDP_IN_PHONO   1
diff --git a/keywords.txt b/keywords.txt
index 8d2c7e6..9d26ff1 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -32,6 +32,7 @@ SLINK_DEVICE_CDP_CX2H	LITERAL1
 SLINK_DEVICE_CDP_CX3L	LITERAL1
 SLINK_DEVICE_CDP_CX3H	LITERAL1
 SLINK_DEVICE_CDP_CXALL	LITERAL1
+SLINK_DEVICE_TC_WE435	LITERAL1
 # List of commands for AMP/RECEIVER
 SLINK_CMD_AMP_MUTE_ON	LITERAL1
 SLINK_CMD_AMP_MUTE_OFF	LITERAL1
@@ -62,6 +63,19 @@ SLINK_CMD_CD_STOP	LITERAL1
 SLINK_CMD_CD_PAUSE	LITERAL1
 SLINK_CMD_CD_NEXT	LITERAL1
 SLINK_CMD_CD_PREV	LITERAL1
+# List of commands for TC
+SLINK_CMD_TC_STOP_A	LITERAL1
+SLINK_CMD_TC_WIND_FWD_A	LITERAL1
+SLINK_CMD_TC_WIND_REV_A	LITERAL1
+SLINK_CMD_TC_PLAY_FWD_A	LITERAL1
+SLINK_CMD_TC_PLAY_REV_A	LITERAL1
+SLINK_CMD_TC_STOP_B	LITERAL1
+SLINK_CMD_TC_PAUSE_B	LITERAL1
+SLINK_CMD_TC_RECORD_B	LITERAL1
+SLINK_CMD_TC_WIND_FWD_B	LITERAL1
+SLINK_CMD_TC_WIND_REV_B	LITERAL1
+SLINK_CMD_TC_PLAY_FWD_B	LITERAL1
+SLINK_CMD_TC_PLAY_REV_B	LITERAL1
 # List of parameters for SLINK_CMD_AMP_SET_INPUT_CHAN
 SLINK_CMDP_IN_TUNER	LITERAL1
 SLINK_CMDP_IN_PHONO	LITERAL1