diff --git a/main.cpp b/main.cpp
index 7569ee0..26d3e12 100644
--- a/main.cpp
+++ b/main.cpp
@@ -192,6 +192,7 @@ inline static void printHelp(Serial* serial)
 	                     "resume                               :  resume sensor output.\n"
 	                     "dump                                 :  Dump epprom.\n"
 	                     "free                                 :  Show free ram.\n"
+	                     "display [on/off]                     :  blank or unblank the display\n"
 	                     "beep                                 :  Test buzzer.\n"
 	                     "list                                 :  List sensors.\n"));
 }
@@ -240,7 +241,10 @@ void serialDispatch(Serial* serial, SVector<Sensor, MAX_SENSORS>* sensors)
 					display.setString("SET     ");
 					_delay_ms(1000);
 				}
-				else serial->write_p(PSTR("usage: set  [yyyy] [mm] [dd] [hh] [mm] [ss]\n"));
+				else
+				{
+					serial->write_p(PSTR("usage: set  [yyyy] [mm] [dd] [hh] [mm] [ss]\n"));
+				}
 			}
 			else if(strcmp(token, "pause") == 0)
 			{
@@ -281,6 +285,38 @@ void serialDispatch(Serial* serial, SVector<Sensor, MAX_SENSORS>* sensors)
 				serial->write(freeRAM());
 				serial->write_p(PSTR(" Bytes.\n"));
 			}
+			else if(strcmp(token, "display") == 0)
+			{
+				char* on = strtok(NULL, " \n");
+				if(on && strcmp(on, "on") == 0)
+				{
+					if(display.getBlank())
+					{
+						serial->write_p(PSTR("Display unblanked\n"));
+						display.setBlank(false);
+					}
+					else
+					{
+						serial->write_p(PSTR("Display already unblanked\n"));
+					}
+				}
+				else if(on && strcmp(on, "off") == 0)
+				{
+					if(!display.getBlank())
+					{
+						serial->write_p(PSTR("Display blanked\n"));
+						display.setBlank(true);
+					}
+					else
+					{
+						serial->write_p(PSTR("Display already blanked\n"));
+					}
+				}
+				else
+				{
+					serial->write_p(PSTR("usage: display [on/off]\n"));
+				}
+			}
 			else if(strcmp(token, "beep") == 0)
 			{
 				serial->write_p(PSTR("Beeping\n"));