Several Z-wave suppliers now carry the new line of Fibar Z-wave switches and dimmers (see: http://fibargroup.com/eng/index.php?ID=instalacja). They are designed to work with your existing (rocker) light switches, rather than replacing them with their own on and off push buttons. The modules are small, designed to be mounted in the pattress box behind your existing switches.
There are several models:
- a single switch for a load up to 3kW
- a double switch for 2 loads of up to 1.5kW
- a dimmer
- a controller for blinds.
The price for each of these is around €55. I ordered the double switch unit, out of curiosity. It arrived today and I gave it a quick spin; here are my findings:
First off, the module works just fine with Vera. After adding it, I got 3 new “_appliance module” items rather than the expected 2. One of them is a control thingy where you set the optional device parameters; the other two modules control one relay each. Finding out which is which is a bit of a hassle; the control thingy will be the appliance module that does not react to a state change of either switch on the device.
The unit can be configured for use with monostable (pushbutton) and bistable (rocker) switches. You can use your existing light switches or add any type of switch, but be aware that one pole of the switch will have to be hooked up to the mains live, so do make sure the switch has adequate electrical insulation. There are some other amusing programmable features, such as turning the relay off after a specified amount of time has passed (10ms - 2,5s).
They can apparently also be programmed to react to alarms (turn on/flash), when paired with a sensor such as a smoke, co2 or flood sensor (I did not test this).
The device appears to do Status Push; when I switch a light from on to off or vice versa using the wall switch, Vera displays the status change instantly.
Another nice feature is that the relays are completely isolated from the rest of the circuitry; you can hook them to the mains, but also use them to switch a separate circuit, 12v appliance,
Thus far I am very positive about this little device. The fact that it can simply be placed behind existing switches makes this a winner. In addition, having status push and an electrically isolated relay in combination with a lot of configuration options, means that this thing can be used for a lot more than just switching lights on an off… I can see a number of other interesting applications.