Tkbhome TZ78 behind a two-way switch not working

[tonbor]

I got a two-way switch (hotelschakelaar). Put a Tkbhome Tz78 behind the right switch. Connected tz78 to power en neutral. The black wire to the bulb into n01 and from orignal switch the black wire to S. So that should Work. Z-wave works

Unfortunaly the Tz78 gets from both switches a double signal as one is turned on. So just a blink from the led, if I disconnect one of the two way black wires and it acts like an one way switch, I can put the light on and off. Somebody got a solution for this?

Screenshot_20190502-105635_Chrome_20190502111556314.jpg (122.45 KiB) Viewed 1354 times

[tonbor]

By the way seller send me a old 300 model of the Tz78 not the plus, so be warned.....

[fargle]

This is a problem I saw with the TZ74s. The hardware switch inputs are way too sensitive and will trigger on noise if the switch wiring is more than a few cm long. Not fixable. I stopped using them for that reason. They also have a habit of locking up....spend a little more cash and buy something decent.

[xuter010]

This is a problem I saw with the TZ74s. The hardware switch inputs are way too sensitive and will trigger on noise if the switch wiring is more than a few cm long. Not fixable. I stopped using them for that reason. They also have a habit of locking up....spend a little more cash and buy something decent.

uhhhhh.. i have a few TZ74s switches, i have no problem with them "hardware switch inputs are way too sensitive" the wall switches that are connected are like 15a20mtr far...

[fargle]

Fwiw, after suffering intermittent power ons and offs when used in a 2-way switch config where one of the switches was located around 15m from the node, I removed one TZ74 device. While bench testing it, I found that the relays could be energized just by touching between the Live and the Switch input terminals with my Fluke meter. Checked another device, same thing. This should not be happening and points to a high impedance/high sensitivity issue on the switch sensing inputs. Induced voltages in long switch cable runs makes them prone to false triggering. Replaced the offenders with Enerwave switches that don't have this problem. Still use the TBK devices as Repeaters or where external switches are not needed. I have a mixture of Aeotec, Qubino, and Enerwave switches and haven't come across this problem with any of those....could be just this model with this issue, but I won't be buying any more of them.

[solarboy]

My TKB often stops responding to commands and requires an exclude/include despite being close to many other routing slaves. I wouldn't recommend either.