With the SHT-12 C4 hand-held transmitter, up to four different functions can be triggered wirelessly. The SHR-12 B4 receiver and evaluation module is recommended as the wireless receiver. This wireless module can be integrated into the stair lift manufacturer’s electronics. Alternatively, wireless receivers with floating contacts are available off the shelf. The variable wireless system allows easy remote control of functions such as movement up and down, stopping and control of hallway and stairwell lighting.