Big topics of discussion within the lighting sector include sustainability, energy efficiency, low cost systems, connectivity and convenience through flexibility. One solution to address these issues, is the wireless and battery-free RF pushbutton module designed by ZF.
For the connection between lighting components and pushbuttons in buildings, cables are the established solution. This variant seems to be cheap and simple to install at first. Unfortunately, the initial low maintenance can quickly turn into an expensive undertaking. Installing cables creates inflexibility. As soon as it comes to modifying buildings updating cables between lights, actuators or sensors, it involves a huge effort and cost. Renovations require planning, knocking down walls, laying new wires and returning the building to its previous state.
ZF offers a sustainable alternative based on RF and completely free of batteries and wires. This concept eliminates the disadvantages of wired and battery powered systems. A tiny and compact generator (20.1 x 7.3 x 14.3 mm) produces enough energy by pressing the button by means of induction, so that it can reliably transmit RF commands to a paired receiver. As a wireless solution it guarantees flexibility and the possibility to retrofit easily according to individual requirements. As a battery-free solution and with a lifetime of 1,000,000 switching cycles, maintenance and disposal requirements of battery replacements can be avoided.
The RF light switch module from ZF is the only one which is directly compatible with the RF standard KNX-RF and it supports the RF standard EnOcean3.0 too. In cooperation with onsemi, ZF has published a reference design for an Energy Harvesting Bluetooth5.0® Low Energy switch and a first demo light switch module. It is compatible with standard frames and can also be combined with customer-specific control and design panels.
For further information on the energy harvesting switches from ZF, visit: