Hi can someone elaborate on what differences are there between the following 2 versions?
http://www.smarthome.com/insteon-224...e-869-mhz.html
http://www.smarthome.com/insteon-224...e-869-mhz.html
http://www.smarthome.com/insteon-224...e-869-mhz.html
http://www.smarthome.com/insteon-224...e-869-mhz.html
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