diff --git a/send.cpp b/send.cpp
index 076e77c..cc6180f 100644
--- a/send.cpp
+++ b/send.cpp
@@ -1,11 +1,26 @@
 /*
- Usage: ./send <systemCode> <unitCode> <command>
- Command is 0 for OFF and 1 for ON
+ Usage: see printUsage()
  */
 
 #include "RCSwitch.h"
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
+#include <iostream>
+
+void printUsage()
+{
+	std::cout << "  Usage: sudo ./send <groupCode> <switchNumber> <command>\n";
+	std::cout << "    e.g. sudo ./send 01011 3 1\n";
+	std::cout << "         sudo ./send <groupNumber> <switchNumber> <command>\n";
+	std::cout << "    e.g. sudo ./send 4 3 0\n";
+	std::cout << "         sudo ./send <familyCharacter> <groupNumber> <switchNumber> <command>\n";
+	std::cout << "    e.g. sudo ./send c 2 3 1\n";
+	std::cout << "\n";
+	std::cout << "  Command is 0 for OFF and 1 for ON\n";
+	std::cout << "\n";
+	std::cout << "  See http://code.google.com/p/rc-switch/wiki/HowTo_OperateLowCostOutlets for more information about supported switches\n";
+}
 
 int main(int argc, char *argv[]) {
     
@@ -15,25 +30,82 @@ int main(int argc, char *argv[]) {
      for pin mapping of the raspberry pi GPIO connector
      */
     int PIN = 0;
-    char* systemCode = argv[1];
-    int unitCode = atoi(argv[2]);
-    int command  = atoi(argv[3]);
-    
-    if (wiringPiSetup () == -1) return 1;
-	printf("sending systemCode[%s] unitCode[%i] command[%i]\n", systemCode, unitCode, command);
+	if (wiringPiSetup () == -1) return 1;
 	RCSwitch mySwitch = RCSwitch();
 	mySwitch.enableTransmit(PIN);
+	
+	if(argc == 4)
+	{
+		char* sGroup = argv[1];
+		int nSwitchNumber = atoi(argv[2]);
+
+		int command  = atoi(argv[3]);
+		
+		if(strlen(sGroup) > 2)
+		{
+			//Type A: 10 pole DIP switches
+			printf("sending [Type A] groupCode[%s] switchNumber[%i] command[%i]\n", sGroup, nSwitchNumber, command);
+
+			switch(command) {
+				case 1:
+					mySwitch.switchOn(sGroup, nSwitchNumber);
+					break;
+				case 0:
+					mySwitch.switchOff(sGroup, nSwitchNumber);
+					break;
+				default:
+					printf("command[%i] is unsupported\n", command);
+					printUsage();
+					return -1;
+			}
+			return 0;
+		} else {
+			//Type B: Two rotary/sliding switches
+			int nGroupNumber = atoi(sGroup);
+			printf("sending [Type B] groupNumber[%i] switchNumber[%i] command[%i]\n", nGroupNumber, nSwitchNumber, command);
+			switch(command) {
+				case 1:
+					mySwitch.switchOn(nGroupNumber, nSwitchNumber);
+					break;
+				case 0:
+					mySwitch.switchOff(nGroupNumber, nSwitchNumber);
+					break;
+				default:
+					printf("command[%i] is unsupported\n", command);
+					printUsage();
+					return -1;
+			}
+			return 0;
+		}
+	}
+	else if(argc == 5)
+	{
+	    //Type C: Intertechno
+		char* sFamily = argv[1];
+		int nGroup = atoi(argv[2]);
+		int nDevice = atoi(argv[3]);
+		
+		int command = atoi(argv[4]);
     
-    switch(command) {
-        case 1:
-            mySwitch.switchOn(systemCode, unitCode);
-            break;
-        case 0:
-            mySwitch.switchOff(systemCode, unitCode);
-            break;
-        default:
-            printf("command[%i] is unsupported\n", command);
-            return -1;
-    }
-	return 0;
-}
+		printf("sending [Type C] family[%s] groupNumber[%i] switchNumber[%i] command[%i]\n", sFamily, nGroup, nDevice, command);
+
+		switch(command) {
+			case 1:
+				mySwitch.switchOn(sFamily[0], nGroup, nDevice);
+				break;
+			case 0:
+				mySwitch.switchOff(sFamily[0], nGroup, nDevice);
+				break;
+			default:
+				printf("command[%i] is unsupported\n", command);
+				printUsage();
+				return -1;
+		}
+		return 0;
+	}
+	else
+	{
+		printUsage();
+	}
+	return 1;
+}
\ No newline at end of file