Since the common remote switches on the 433MHz band only have one way communication, we never know if the command was really received. There are a lot of different products using this frequency band so it is not uncommon that the command is not received by the switch due to interference. This can be very annoying if the lamp was controlled by a timer in NetHome, since the lamp is not turned on/off as expected.
I have added a new Item to overcome this weakness in these protocols - a LampRepeater-Item.
You configure which lamps you want it to guard, and when one of those lamps is turned on or off the Item will repeat the command three times with 15 seconds interval. This increases the likelihood that the lamp really behaves as expected when it is controlled by a timer in a noisy radio environment. The Item is available in the nightly build.