This function is built inside of the motion sensor to achieve tri-level control, for some areas which require a light change notice before switch-off. The sensor offers 3 levels of light: 100%-->dimmed light (natural light is insufficient) -->off; and 2 periods of selectable waiting time: motion hold-time and stand-by period; Selectable daylight threshold and freedom of detection area.
Innovative and patented software enables the antenna with built-in daylight sensor to provide a “smart photocell” function. This function is activated when stand-by period is set to “+∞ ”.
It is easy to forget to switch off the light, in office, corridor, even at home. And in many other cases, people do not want to have a sensor to switch on the light automatically, for example, when people just quickly pass-by, there is no need to have the light on. The solution is to apply this “absence detector”: motion sensor is employed, but only activated on the maunal press of the push switch, the light keeps being ON in the presence, and dims down in the absence, and eventually switches off in the long absence.
This is a good combination of sensor automation and maunal override control, to have the maximum energy saving, and at the same time, to keep efficient and comfortable lighting.
Designed in the software, sensor switches on/off the load right at the zero-cross point, to ensure that the in-rush current is minimised, enabling the maximum lifetime of the relay.
Settings on this demonstration:Detection range: 100% Hold-time: 10min Daylight threshold: 50lux Stand-by dimming level: 30% Stand-by period: 10min RX:100%
1. The 1st floor sensor detects motion, its fixture turns on FULL and sends RF signal to 2nd floor sensor and any others programmed to be in the same group. The 2nd floor fixture turns on full or to dim level programed, as does each fixture in group. The group should contain enough fixtures to provide safe lighting levels, perception of safety and elimination of undesirable tunnel effects.
2. As occupant moves to 2nd floor, this sensor detects motion and turns its fixture on full and sends RF signal to each sensor in group. The first floor sensor’s programmed timer starts while no motion is being detected. Through remote programming, each fixture provides only as much light as is needed.
3. With occupant on 3rd floor, this sensor detects motion and sends RF signal to a different grouping of sensors to turn on their fixtures on floors above and below. Meanwhile, the 1st floor sensor goes into programmed dim mode after the hold-time times out and stand-by timer starts to count.
4. This propagation continues with new groupings as occupant moves to 4th floor and this sensor detects motion. Meanwhile, the 1st floor sensor’s stand-by timer times out it will turn off the light. 2nd floor’s sensor goes into programmed dim mode.
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