Occupancy sensors that rely on ultrasonic technology send high frequency sound waves (that humans can’t hear) into an area and measure reflection patterns. When the pattern changes, the sensor considers the space occupied.
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What is the difference between an occupancy sensor and a motion sensor?
The Occupancy sensor detects presence of people or animals in the target monitored area. The motion sensor responds to moving objects only. The difference between them is occupancy sensor produce signals whenever an object is stationary or not while motion sensor is sensitive to only moving objects.
How does an occupancy sensor light switch work?
An occupancy sensor is a kind of motion sensor that will automatically turn on the lights when detecting the presence of a person and automatically turn off the lights when no presence is detected to save energy and provide convenience.An occupancy sensor looks like a light switch with a lens for motion detection.
How does a wireless occupancy sensor work?
In a wireless occupancy sensor, the sensor sends a wireless signal to the controller, and the controller increases or decreases the power to the luminaire. Signal repeaters can be installed if the signal has to be relayed more than 50 feet from the sensor to the controller.
How are occupancy sensors wired?
Occupancy sensor switch wires each have two black wires, (or one black and one red) and ground (green). One of the black line wires connects to line voltage from the panel, the other black (or red) load wire connects to the light(s). Each black wire can be a line or a load.
Does an occupancy sensor need a neutral?
Some require neutral wire, while others do not. Generally if no neutral wire is required, then the type of load is limited to incandescent lights. Some occupancy sensors/ motion detectors turn On automatically, while others are activated by push button. All occupancy sensors turn off automatically.
How long do occupancy sensors stay on?
A choice of four delayed-OFF time settings is available: 30-seconds (for walk test purposes only), 5 minutes, 15 minutes, and 30 minutes. Range The range can be adjusted from 100% to 36% of the total coverage area.
How do you make a motion switch stay on?
One of the quick tricks you can try is to quickly turn the motion sensor ON, OFF, ON to override the motion detection and make the light stay on. To go back to motion detection mode, turn the motion sensor switch off and wait for about 10 seconds, and then turn it on again.
Where are occupancy sensors required?
Occupancy sensors per C405. 2.2. 2 are required in all classrooms, conference/meeting rooms, employee lunch and break rooms, private offices, restrooms, storage rooms, janitorial closets, and other spaces 300 sq ft or smaller enclosed by ceiling height partitions.
Are occupancy sensors required by code?
Codes require the occupancy sensor turn the lights off within 30 minutes of the occupant leaving the space, ensuring energy savings. Control manufacturers recommend a 15- to 20-minute time delay as a good compromise between energy savings and lamp life.
What is the range of an occupancy sensor?
Some PIR sensors have an operating range of up to 35 feet in specific directions in ideal conditions. However, they’re most reliable within a 15-foot range because they’re passive (that is, they only receive signals) and the blind spots between their wedge-shaped sensory patterns get wider with distance.
What is the blue wire on a motion sensor light?
Use the blue or yellow wire to connect to load (light fan motor etc). 1) Occupancy-green-wire connects to bare ground wire. 2) Single-pole switch being replaced has 2 wires. Take Single-pole switch wires and connect them to Occupancy-black-wire and Occupancy-red-wire.
How do you wire multiple occupancy sensors?
Connect the Blue (occupancy) wires of all power packs and sensors together. Connect the Black (return) wires of all power packs and sensors together. Connect the Red (+24VDC) wires of the sensors to the Red wires of only one power pack. Never connect the Red (+24VDC) wires of two different power packs together.
Can you put a motion sensor on a 4 way switch?
You could use some Insteon (or similar) home automation devices to have two motion sensors control the lights. You’d need two wireless motion sensors and one dual-band switch. The switch receives the wireless signal from the motion sensors and activates the lights.
Does motion sensor light switch need neutral wire?
Some motion-sensing switches require that there be a neutral (white) wire attached to them, some do notfor those that do there is no substitute.If there is a neutral wire in the box, then any motion switch can be used. If not, you must make sure that the switch you purchase does not require a neutral.
How do you override occupancy sensor?
If you turn the switch off and on within a second or so, the light will stay on, and this overrides motion detection. To go back to normal operation, turn the switch off and wait ~10 seconds, then turn back on.
How does ecobee sensor know if a room is occupied?
The sensors include a motion detector to tell the ecobee which parts of your house are active.The motion sensors are passive infrared motion sensors. This means they use the natural infrared radiation given off by all objects as a means of detecting motion, and therefore work regardless of light or dark.
How many Occupancy sensors does a power pack have?
A single power pack can power either 4 sensors or 3 sensors and the MPSA auxiliary relay for multiple circuits. The Universal Voltage Power Pack is plenum rated and easily mounts either inside or outside a junction box or inside a fluorescent ballast cavity.
Can you put tape over a motion sensor?
Yes, covering the motion sensor by eg. tapes or cabinet doors will stop the motion sensor from working.
Why does motion sensor light stay on?
Several things can cause your motion detector to stay on, including age, storm damage, a power surge, improper installation, and improper settings. A few issues are easy to correct without professional help.
Can you bypass a motion sensor light?
Bypassing your motion detector
Many motion detectors can be bypassed with little effort. With an additional light switch, the connected outdoor light can then be switched to permanent light.
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