diff --git a/lora.py b/lora.py
index 9dca579..54b2330 100644
--- a/lora.py
+++ b/lora.py
@@ -48,6 +48,7 @@ CMD_TERMINATE = 1	# no args: terminate the sesssion, reply confirms
 CMD_WAITFOR = 2		# arg: (length): waits for length seconds
 CMD_RUNFOR = 3		# arg: (chan, length): turns on chan for length seconds
 CMD_PING = 4		# arg: (): a no op command
+CMD_SETUNSET = 5	# arg: (chan, val): sets chan to val
 
 class LORANode(object):
 	'''Implement a LORANode initiator.'''
@@ -121,6 +122,9 @@ class LORANode(object):
 	async def runfor(self, chan, length):
 		return await self._sendcmd(CMD_RUNFOR, chan, length)
 
+	async def setunset(self, chan, val):
+		return await self._sendcmd(CMD_SETUNSET, chan, val)
+
 	async def ping(self):
 		return await self._sendcmd(CMD_PING)
 
@@ -285,7 +289,7 @@ async def main():
 
 	await l.start()
 
-	valid_cmds = { 'waitfor', 'runfor', 'ping', 'terminate', }
+	valid_cmds = { 'waitfor', 'setunset', 'runfor', 'ping', 'terminate', }
 
 	cmdargs = list(args.args)
 	while cmdargs: