The 3 channel radio receiver for direct connection to a 230 v mains is ideal for all surface mounted private and industrial installations under optimum conditions ranges of up to 1000 m can be covered in the open space with the hand held transmitter order no 60 98 04 the 3 change over contacts can be switched over for touch wipe and switch operation separate learning of transmitter code and button for each relay allows assigning key combinations as well eg alarm systems etc in combi