Presence detector, DALI daylight control for flush-mounting in ceilings of 2.4 - 3m. Standalone or as master combinable with a maximum of 10 slaves (350-41659). For use in offices, schools, conference rooms… in large and small spaces. The detector has a maximum of 3 daylight controlled zones, and an extra contact which can be used. It has a very flat design of only 5 mm, so that it can be mounted almost flush with the ceiling. Depending on the chosen application the lighting must always be switched on manually using a push button, and is automatically switched off if there is sufficient daylight or no one is in the room (absence detector). Or the lighting is switched on automatically when movement is registered and there is insufficient daylight. In this case, the lighting is also automatically switched off if there is sufficient daylight or no one is in the room (presence detector). The lighting remains on as long as the detector detects movement and the measured level of daylight is lower than the set value. The switch-off delay, the lux value at which the lighting must switch on and the sensitivity of the detector are easily set with the IR remote control for smartphone (optional).