JCC Leviton-Catalogue 33

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MICROWAVE A transmitter sends out continuous waves of radiation that ERXQFH RII SHRSOH DQG DUH UHFHLYHG EDFN DW WKH VHQVRU These detectors can be more robust than a PIR but travel through walls and can cause unplanned detection. PHOTOCELL The sensor reacts to natural ambient light and will turn on ZKHQ D SUHGHWHUPLQHG OHYHO RI OLJKW LV UHDFKHG 7KH îWWLQJ remains on until the light increases to a second pre set light level, at which the light will switch off. This is useful when limited illumination is required for safety or security. SEPARATE CONTROL WIRE Used to control most commercial applications where the power usage is greater. Allows the transmission of 1-10 9ROW '$/, DQG '6, GLUHFWO\ WR WKH OLJKW îWWLQJV WIRELESS TRANSMISSION Used to transmit a digital signal and doesn’t require a VHSDUDWH FRQWURO ZLUH KRZHYHU ZLUHOHVV OLQNV FDQ suffer interference and are limited in range particularly where walls and metal objects exist. Examples of these include RF (radio frequency) and Zigbee which is an example standard that allows meshing to increase range and availability.

ON/OFF TIMED Switches the lights on for a pre-programmed time and are often used in communal access corridors and staircases. DIMMABLE Switches allow adjustment of the lighting, often adjusted by rotation or the length of time the switch is held down. NON-DIMMABLE 7KH GULYHU FDQQRW DGMXVW WKH SRZHU WR WKH /(' îWWLQJ DQG can therefore only be switched on/off. DIMMABLE 7KH SRZHU WR WKH /(' îWWLQJ LV FKDQJHG E\ WKH GULYHU ZKHQ it receives a signal from a controller. Examples include phase dimming and 1-10V dimming. PIR n3DVVLYH ,QIUDUHGo LGHQWLîHV SHRSOH RU DQLPDOV E\ ORRNLQJ for changes in the heat pattern. The sensor detects the change in radiation and turn on the light.