IR remote control for presence detector installation EE81x/TCC5xx for on/off/dimming. Remote control for EE815/816/TCC52x for switching the connected lighting on/off via IR remote control on 4 different EE815/816/TCC52x and additionally with the EE816/TCC521 for dimming up/down or controlling the light scene of the connected lighting. Battery life: 3.5 years