Velleman 4 channel remote control velleman vm160 the velleman 4 channel rf remote control set is a mains operated 4 channel rf receiver designed for use as a remote or codelock security transmitterreceiver among other uses it is supplied with a 4 channel handheld rf transmitter which is also available separately as rapid part 70 4548 the 4 channel remote control set can be operated from the desktop rf transmitter available as rapid part 70 4546 velleman vm160 4 channel rf remote contr