Review on 📡 CM19A R.F. PC Transceiver for X10 Devices by Leon Johnsson

The CM19A RF transceiver (and the TM751 ordered at the same time) arrived quickly and works great. Two notes on these two devices: In some old reviews, people have complained about the loud clicking noise the TM751 makes when activated. Well yes, it's loud. But the TM751 works as a device module with a power rating of 500 watts and therefore needs a fairly powerful relay. If you don't like the click, just stay away from the Code 1 device. Some have pointed out that the CM19A needs to be plugged into an always-on computer. Again, yes, that's how it works. I use mine with a $35 Raspberry Pi, which only draws a watt or two, so leaving it on all the time isn't a big deal.