Presence detection determines whether a sensor has the ability to detect motion.

Detection type determines the technology used to detect motion (with passive infra red or microwave sensors) or natural daylight (with photocell)

Output determines the signal that the sensor uses to communicate with the luminaire and therefore the control gear type that must be used in the luminaire, for example Digital Dimming (DSI and DALI) or Analogue High Frequency Regulating (1-10V), and therefore the control gear type that must be used in the luminaire. Relay sensors contain an internal switch only capable of turning luminaires on and off or activating a corridor mode function with some digital control gear types.

Programmer determines the type of programmer that must be used with the sensor in order adjust the settings outlined in functions section below. Turn dial sensors can not be programmed via a remote control and must be manually set by adjusting dials on the sensor itself.

High Time Delay - Allows the user to specify the length of time that the luminaire spends at full output after the last detected motion, after which the luminaire dims to the Low Light Level setting or turns off.

Low Time Delay - Allows the user to specify an optional time spent at the Low Light Level setting, after which the luminaire will switch off completely to maximise energy savings (if no additional presence has been detected).

Low Light Level - This level determines the level of output to which the luminaire will dim when the sensor has not detected motion for the specified time. It also indicates the minimum level that daylight regulation will dim to.

High Light Level - Allows the maximum output of the luminaire to be determined.

Fade Time - Allows the user to determine the time taken for the luminaire to dim from high light level to low light level.

Lux Calibration - Allows the daylight regulation level to be set by measuring the lux level to provide the sensor with a reference point, even allowing commissioning during daylight hours where there is a large contribution of natural daylight.

One Switch - Also known as absence detection, allows luminaire to be manually turned on via a wall switch and only turns the luminaires off after the high time delay has expired.

BUS Link - Allows multiple sensors to be linked together so that an activation of any single sensor will activate all linked sensors simultaneously.

Mounting Range determines the minimum and maximum height at which the sensor can be installed.

Daylight control determines whether the sensor has the ability to detect natural daylight and either dim the luminaire to maintain a constant lux level (daylight regulation) or inhibit the luminaire from switching on when there is sufficient natural daylight in the area (bright out).

Detection diameter determines the range at which the sensor is able to detect motion.

Mounting determines whether the sensor is designed to be used integrally within a luminaire or as standalone sensor used to control multiple luminaires.