Ceiling Mount Sensor |
![]() LX20B |
![]() LX28A |
![]() LX28B |
![]() LX28F |
Infrared Motion Sensor LX20B |
Power source: 100V/AC~130V/AC |
Detection distance:6m max (24℃) |
FUNCTION:
- Can identify day and night automatically: The ambient-light can be adjusted freely according to consumer’s desire when LX20 works. It can work in the daytime andat night when you turn the switch to the "TEST" position. It can work only in the less than 10LUX ambient-light when you turn it to the "2", "3", "4" position. As for the adjustment pattern, please refer to the testing pattern.
- Power and detection indication: The indicator lamp is green when you switch on the power and it is red when sensor receives the induction signals. So it can show if the power and detection are normal.
- Time-delay is adjustable: time-delay can be set freely according to consumer’s desire. Turn the switch clockwise. The "1" position (the minimum time) is about 5sec. "2" position is about 30sec, "3" position is 2min±30sec, "4" position is 6min±1min.



Correct moving orientation Incorrect moving orientation
INSTALLATION:(see the following figure)
- Switch off the power.
- Turn clockwise the bottom-stand and take off it. The power wire cross the hole in the middle of bottom-stand.
- The bottom-stand is fixed on the selected position with inflated screw.
- Connect the power and the load into the connection-wire column of the sensor according to connection-wire diagram.
- The sensor aimed at the mouth of bottom-stand and turned anti-clockwise.
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CONNECTION-WIRE DIAGRAM
(see the right figure)
TEST:
- Turn the switch to the "1" position,
- After switching on the power, the controlled load shouldn't work and the indicator lamp is green, after 5~10sec, the load should work and the indicator lamp is red. Under the no inductor signals condition, the load should stop working within 5~30sec. The indicator lamp is still green.
- After the first is out, make it sense again after 5~10sec, the load should work and the indicator lamp is red. The load should stop working within 5~15sec.
- Turn the switch to the "2" position. The inductor load shouldn't work in theambient-light more than 10lux. If you cover the detection window with the opaque objects (towel elc), the load should work. Under the no inductor signals condition, the load should stop working within 25~35sec.
NOTES:
- Electrician or experienced human can install it;
- The unrest objects can’t be regarded the installation basis-face;
- In front of the detection window there aren’t hinder or unrest objects effecting detection.
- Avoid installing it near air temperature alteration zones for example: air condition, central heating, etc
- Please don’t open the case for your safety if you find the hitch after installation.
- If there are some difference between instruction and the function the product has, please give priority to product and sorry not to inform you additionally.
SOME PROBLEM AND SOLVED WAY
- The load don’t work:
a.Check the power and the load;
b.If the load is good;
c.If the indicator lamp is green;
d.Please check if the working light correspond to the ambient light。
- The sensitivity is poor:
a.Please check if in front of the detection window there is hinder that effect to receive the signals。
b.Please check the ambient temperature;
c.Please check if the signals source is in the detection field;
dPlease check the installation height;
e.If the moving orientation is correct.
- The sensor can’t shut automatically the load:
a.If there are continual signals in the detection fields;
b.If the time delay is set to the longest;
c.If the power correspond to the instruction.
d.If the air temperature change near the sensor, for example air condition or central heating etc.
Infrared Motion Sensor LX28A & LX28B |
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Power source: 220V/AC-240V/AC |
Rated load: 1200W (220-240V/AC) |
FUNCTION:
- Identify day and night automatically. Can adjust ambient light according to your desire: when turn to SUN (max), it will work in the daytime and at night. When turn to MOON (min), it will only work under less than 3LUX circumstance. As for Adjustment, please refer to testing way.
- Detection distance can be set according to installation position and detection field.
- The power show and detection show: the indictor lamp will flash one time each 4 seconds after switching on the power, and flash two times per second when receiving the signal. At the same time, it shows the sensor in the normal detection conditions.
- Time-delay is added continually: when it receives the second induction signal after the first inductor, it will compute time once more on the rest of the first time-delay basic. (Set time)
- Time-delay adjustment: it can be set according to your desire. The minimum is 8+/-3 sec; the maximum is 7±2min.
- Locking function: during working, when power is shut off 2 seconds and then on, the sensor will be locked automatically and keep load working continually(for example it will always lighting). And shut off the power for 4 seconds and then on, sensor will resume automation.
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Correct moving orientation |
A |
B |
incorrect moving orientation |
INSTALLATION: (see following diagram)
- Switch off the power:
- Push down LED according to the sketch map in packing, take down the top cover by anti-clockwise turn.
- The sensor is fixed on the selected position with the inflated screw:
- Connect the power and the load into the connection-wire column according to the sketch map.
- Put the top cover on the sensor, turn it anti-clockwise and you will hear “bong ”, so you can test it.



CONNECTION SKETCH (see the right figure)
TEST:
- Turn PHOTO knob clockwise to the maximum (SUN). Turn time knobanti-clockwise to the minimum.
At the time of your switching on the power, the load doesn’t work and the show lamp flashes once every second. After 5-10 sec, the load works and the indicator lamp flashes twice every second. Under the no induction conditions, the load should stop working within 5-30 sec, and the show lamp should get back to flash twice every 4 sec;
- If make it sense again 5-10 seconds later after it goes out, load should work and the flashing speed is two times per second, then load will stop working within 5-15 seconds.
- Turns PHOTO knob anti-clockwise to the minimum. If it is tested under the circumstance below 3LUX, load should not work after induction load stop working; but if you cover the detection window with opaque objects (towel etc), the load works. Under the condition of no induction signals, the load should stop working within 5-15 sec.
NOTES:
- Should be installed by electrician or experienced man.
- Avoid installing it on the unrest objects
- There shouldn’t be hindrance and moving object in front of the detection window effecting detection.
- Avoid installing it near air temperature alteration zones such as air condition, central heating, etc.
- Considering your safety, please don’t open the cover when you find the hitch after installation.
- If there is difference between product and instruction, please refer to product mainly.
SOME PROBLEM AND SOLVED WAY:
- The load don’t work:
- Please check the power and load connect is correct.
- Check if show lamp flash with one time every 5 seconds.
- Check if the load is good.
- Check if the show lamp accelerates its speed after detecting.
- Check if the working light corresponds to the ambient light.
- The sensitivity is poor
- Please check if there is hinder in front of the detection window to effect receiving the signals.
- Please check if the ambient temperature is too high.
- Please check if the signals source is in the detection fields.
- Please check if the installation height corresponds to the height showed in the instruction.
- Please check if the moving orientation is correct.
- The sensor can’t shut the load automatically.
b. Check if the time delay is set to the longest.
c. Check if the power corresponds to the instruction.
d. Check if the temperature change obviously nears the sensor, such as air condition or central heating etc.
e. Check if it is in locked conditions.
Infrared Motion Sensor LX28F |
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USER’S MANUAL SUMMARY SPECIFICATION
FUNCTION
SET TIME WAY
Example::set time 25sec and then set to 10sec: LUX and SENS adjustment
Impulse mode LED numeric display OFF moving to left. Sense, the load work for 0.5sec, the sense time interval is adjustable, default is 50sec.
connection-wire method
Install procession troubleshooting |





The product is a new energy-saving switch, it adoptsintegrated circuit and the good sensitivity detector. It incorporates automatism, convenience, energy-saving, safety and practicality. It works by receiving human motion infrared rays. It can start the controlled load at once when one enters detection field. It can identify day and night automatically. Its installation is very convenient and using range is wide. It has the functions of power indication and detection indication.







The product is a new saving-energy switch, itadopts good sensitivity detector, integrated circuit and SMT. It gathers automatism, convenient safe, saving-energy and practical functions. Three detectors inside compose a wide range detection field, it utilizes the infrared energy from human as control-signal source, it can start the load at once when one enters detection field. Itcan identify day and night automatically. It is easy to install and used widely, possessing the functions of power show and detecting show.




LX28F has 3 high-sensitivity detectors, it adopts IC, LED numeric display and SMT technology; the 3 detectors compose wide detecting range; it use infrared energy form human body as its control source, when one enter its sense range, it can start controlled load(for example: lamp); after leaving the range, the load will go out automatically within set time.
Time delay(normal mode):0sec~999sec(adjustable), default:8sec 


