diff --git a/src/energenie/encoder.py b/src/energenie/encoder.py
index 2bc591c..d4afa25 100644
--- a/src/energenie/encoder.py
+++ b/src/energenie/encoder.py
@@ -4,6 +4,13 @@
 
 ALL_SOCKETS = 0
 
+def ashex(payload):
+    line = ""
+    for b in payload:
+        line += str(hex(b)) + " "
+    return line
+
+
 def build_relay_msg(relayState=False):
     """Temporary test code to prove we can turn the relay on or off"""
 
@@ -45,6 +52,14 @@
     return payload
 
 
+def build_test_message(pattern):
+    payload = [0x8E, 0xE8, 0xEE, 0x88, 0x8E, 0xE8, 0xEE, 0x88, 0x8E, 0xE8]
+    pattern &= 0x0F
+    control = encode_bits(pattern, 4)
+    payload += control
+    return payload
+
+
 def build_switch_msg(state, device_address=ALL_SOCKETS, house_address=None):
     """Build a message to turn a switch on or off"""
     #print("build: state:%s, device:%d, house:%s" % (str(state), device_address, str(house_address)))
@@ -100,6 +115,7 @@
     #   1000 UNUSED         8
     #   1001 UNUSED         9
     #   1010 socket 3 off   A
+    #   1011 socket 3 on    B
     #   1100 all off        C
     #   1101 all on         D
     #   1110 socket 1 off   E
diff --git a/src/legacy.py b/src/legacy.py
index 45a9ee0..e587264 100644
--- a/src/legacy.py
+++ b/src/legacy.py
@@ -109,6 +109,16 @@
         time.sleep(1)
 
 
+def pattern_test():
+    """Test all patterns"""
+    while True:
+        p = raw_input("number 0..F")
+        p = int(p, 16)
+        msg = encoder.build_test_message(p)
+        print("pattern %s payload %s" % (str(hex(p)), encoder.ashex(msg)))
+        radio.transmit(msg)
+            
+
 if __name__ == "__main__":
 
     print("starting legacy switch tester")
@@ -118,7 +128,8 @@
     try:
         #legacy_learn_mode()
         #legacy_switch_loop()
-        legacy_test()
+        #legacy_test()
+        pattern_test()
 
     finally:
         radio.finished()