diff --git a/include/rtl_433_devices.h b/include/rtl_433_devices.h
index 5a050f9b5..fb2ebda0f 100644
--- a/include/rtl_433_devices.h
+++ b/include/rtl_433_devices.h
@@ -265,6 +265,7 @@
     DECL(mueller_hotrod) \
     DECL(thermopro_tp28b) \
     DECL(tpms_bmwg3) \
+    DECL(tr_502msv) \
 
     /* Add new decoders here. */
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d37a302dd..1cd9a5ef2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -253,6 +253,7 @@ add_library(r_433 STATIC
     devices/tpms_toyota.c
     devices/tpms_truck.c
     devices/tpms_tyreguard400.c
+    devices/tr_502msv.c
     devices/ts_ft002.c
     devices/ttx201.c
     devices/vaillant_vrt340f.c
diff --git a/src/devices/tr_502msv.c b/src/devices/tr_502msv.c
new file mode 100644
index 000000000..2d896e5f5
--- /dev/null
+++ b/src/devices/tr_502msv.c
@@ -0,0 +1,91 @@
+/** @file
+    TR-502MSV remote controller for RC-710DX.
+
+    Copyright (C) 2024 Filip Kosecek <filip.kosecek@gmail.com>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+*/
+
+#include "decoder.h"
+
+/**
+TR-502MSV remote controller for RC-710DX.
+
+21-bit data packet format, repeated up to 4 times
+    PIIIIIII IIIIISSS OCRUU
+
+- P: 1-bit preamble
+- I: 12-bit device id
+- S: 3-bit socket id
+- O: 1-bit on/off
+- C: 1-bit command - brightness/switch
+- R: 1 reserved bit (always 0)
+- U: 2 unknown bits, most likely a checksum
+
+*/
+
+static int tr502msv_decode(r_device *decoder, bitbuffer_t *buffer)
+{
+    int device_id;
+    data_t *output_data;
+    uint8_t socket_id;
+    uint8_t *b;
+    const char *command_str, *socket_str;
+    const char *sockets[]  = {"1", "3", "2", "4", "ALL"};
+    const char *commands[] = {"OFF", "BRIGHT", "ON", "DIM"};
+
+    if (buffer->num_rows != 1 || buffer->bits_per_row[0] != 21)
+        return DECODE_ABORT_LENGTH;
+
+    b = buffer->bb[0];
+    if ((b[0] & (1 << 7)) == 0)
+        return DECODE_ABORT_EARLY;
+    if ((b[2] & (1 << 5)) != 0)
+        return DECODE_FAIL_SANITY;
+
+    device_id   = ((b[0] & 0x7f) << 5) | (b[1] >> 3);
+    command_str = commands[b[2] >> 6];
+    socket_id   = b[1] & 0x7;
+    if (socket_id % 2 == 0)
+        socket_str = sockets[socket_id >> 1];
+    else if (socket_id == 0x7)
+        socket_str = sockets[4];
+    else
+        return DECODE_FAIL_SANITY;
+
+    /* clang-format off */
+    output_data = data_make (
+        "model",    "Model",        DATA_STRING,    "TR-502MSV",
+        "id",    "Device ID",        DATA_FORMAT,    "%u",    DATA_INT,    device_id,
+        "socket_id",    "Socket",    DATA_STRING,    socket_str,
+        "command",    "Command",    DATA_STRING,    command_str,
+        NULL
+        );
+    /* clang-format on */
+    decoder_output_data(decoder, output_data);
+
+    return 1;
+}
+
+static const char *output_fields[] = {
+        "model",
+        "id",
+        "device_id",
+        "socket_id",
+        "command",
+        NULL,
+};
+
+const r_device tr_502msv = {
+        .name        = "TR-502MSV remote smart socket controller",
+        .modulation  = OOK_PULSE_PWM,
+        .short_width = 740,
+        .long_width  = 1400,
+        .tolerance   = 70,
+        .reset_limit = 84000,
+        .decode_fn   = tr502msv_decode,
+        .fields      = output_fields,
+};