Shawn, I believe that you are over looking the obvious in the TW523. This module is generic and all it does is place a pulse on the AC line to be received by ???. The TW523 is a transceiver, therefore if one TW523 were to place a series of data pulse on the AC line, then another TW523 will be able to receive these pulses. The important thing to remember it that X-10 modules wont be able to decode the data if not in an X-10 format, but I believe that all you want to do is send data packet to another location. The TW523 has a data in, data out and a zero crossing signal line. Use the zero crossing line to synchronize the data and send the data in a similar data method as X-10 (same pulse width and timing) but send as many bits in any order as needed to get the data to the other TW523. Decode it using your microcontroller and don't worry if X-10 modules can decode it or not. I believe that this will work for you with no problems. Gordon Varney ----- Original Message ----- From: "Shawn Yates" To: Sent: Saturday, October 07, 2000 6:48 PM Subject: [EE]: X-10 OEM module Hello all, I am investigating using a PLC (power line carrier) to send data around a building. I looked at X-10, but it seems to be limited to on and off. I looked at the devices (TW523) at x10.com. There is something about an extended data code, but it specificaly says that the OEM receiver can not receive those. Does anyone know of an off the shelf OEM module that I can use to send data over the power wires withing a building? I can modify my data format and speed on a whim, so anything is fine. The total length of the data is about 3 bytes, but again thats flexable. Thanks for any input, Shawn -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! use mailto:listserv@mitvma.mit.edu?body=T%20PICList%20DIGEST -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! use mailto:listserv@mitvma.mit.edu?body=SET%20PICList%20DIGEST