Mutiple TM751 on same house circuit code

[nobleskydiver]

Dear experts,  Do you need to use the TM751 for each set of 4 in a group?  or is one enough? 

Is the clicking noise heard from within TM751  normal switching on/off

[Charles Sullivan]

Dear experts,  Do you need to use the TM751 for each set of 4 in a group?  or is one enough? 

Is the clicking noise heard from within TM751  normal switching on/off

The TM751 transceives RF signals for all 16 unit codes in the housecode.  You'll need only one per housecode.

The clicking noise is the relay for the built-in appliance module.  It only responds to On/Off RF signals with unit code 1.  Except for the audible annoyance, it can be ignored if you have nothing plugged in.

[Brian H]

It also does not have a powerline receiver in it. So it can not be controlled by a powerline controller. Like a Max-Controller etc.