diff --git a/sonoff/xdrv_26_sm2135.ino b/sonoff/xdrv_26_sm2135.ino
index f380df1f4..a54a6ccb8 100644
--- a/sonoff/xdrv_26_sm2135.ino
+++ b/sonoff/xdrv_26_sm2135.ino
@@ -20,21 +20,38 @@
 #ifdef USE_LIGHT
 #ifdef USE_SM2135
 /*********************************************************************************************\
- * SM2135 RGBCW Led bulbs like Action LSC SmartLed
+ * SM2135 RGBCW Led bulbs like some Action LSC SmartLed
  *
  * {"NAME":"LSC RGBCW LED","GPIO":[0,0,0,0,0,0,0,0,181,0,180,0,0],"FLAG":0,"BASE":18}
 \*********************************************************************************************/
 
 #define XDRV_26             26
 
-#define SM2135_ADDR         0xC0
+#define SM2135_ADDR_MC      0xC0  // Max current register
+#define SM2135_ADDR_CH      0xC1  // RGB or CW channel select register
+#define SM2135_ADDR_R       0xC2  // Red color
+#define SM2135_ADDR_G       0xC3  // Green color
+#define SM2135_ADDR_B       0xC4  // Blue color
+#define SM2135_ADDR_C       0xC5  // Cold
+#define SM2135_ADDR_W       0xC6  // Warm
 
-//#define SM2135_CURRENT      0x12  // 3 x 15mA for RGB, 2 x 20mA for CW - Get really hot
-//#define SM2135_CURRENT      0x11  // 3 x 15mA for RGB, 2 x 15mA for CW
-#define SM2135_CURRENT      0x20  // 3 x 20mA for RGB, 2 x 10mA for CW
+#define SM2135_RGB          0x00  // RGB channel
+#define SM2135_CW           0x80  // CW channel (Chip default)
 
-#define SM2135_RGB          0x00
-#define SM2135_CW           0x80
+#define SM2135_10MA         0x00
+#define SM2135_15MA         0x01
+#define SM2135_20MA         0x02  // RGB max current (Chip default)
+#define SM2135_25MA         0x03
+#define SM2135_30MA         0x04  // CW max current (Chip default)
+#define SM2135_35MA         0x05
+#define SM2135_40MA         0x06
+#define SM2135_45MA         0x07  // Max value for RGB
+#define SM2135_50MA         0x08
+#define SM2135_55MA         0x09
+#define SM2135_60MA         0x0A
+
+//                              RGB current         CW current
+const uint8_t SM2135_CURRENT = (SM2135_20MA << 4) | SM2135_10MA;
 
 struct SM2135 {
   uint8_t clk = 0;
@@ -85,12 +102,12 @@ bool Sm2135SetChannels(void)
 //      buffer[4] >>= 1;  // Divide by 2
     }
 */
-    data[0] = SM2135_ADDR;
+    data[0] = SM2135_ADDR_MC;
     data[1] = SM2135_CURRENT;
     data[2] = SM2135_CW;
     Sm2135Send(data, 3);
     delay(1);
-    data[0] = SM2135_ADDR +5;
+    data[0] = SM2135_ADDR_C;
     data[1] = buffer[4];  // Warm
     data[2] = buffer[3];  // Cold
     Sm2135Send(data, 3);
@@ -102,7 +119,7 @@ bool Sm2135SetChannels(void)
       // Currently not needed with setting 3 x 15mA = 45mA = 11W = 765
     }
 */
-    data[0] = SM2135_ADDR;
+    data[0] = SM2135_ADDR_MC;
     data[1] = SM2135_CURRENT;
     data[2] = SM2135_RGB;
     data[3] = buffer[1];  // Green