X10 Lighting Monitoring
Here is an interesting home automation indication mod. “Like almost all the currently available UK X10 modules, the LD11 does NOT support status response. This coupled with the fact that X10 commands can sometimes “go astray” and seemingly disappear into the electrical ether before reaching the chosen device, means that the tracking of the current status of a device is very error prone. Intelligent controllers like HomeVision and software like