LEYDEN® LS-LDN4T 220-240VAC, 1200W (Incandescent), 300W (LED Load) Microwave Motion Sensor Detector Concealed/Ceiling Mount for Home Security System (Pack of 1)

Price: ₹14,999 - ₹799.00
(as of Mar 29, 2026 02:32:37 UTC – Details)


The LS-LDN4T sensor is an energy-saving switch that adopts a microwave sensor with high-frequency electromagnetic waves and an integrated circuit. This Microwave motion sensors offer reliable and efficient human or animal movement detection, making them ideal for security systems, lighting control, and home automation. This sensor uses microwave technology to detect movement, offering high sensitivity and accuracy.

• Power Source: 220-240 V AC
• Power Frequency: 50 Hz
• Rate Load: 1200W (Incandescent), 300W (LED LOAD)
• Time Delay: Min. 10 sec +/- 3 sec, Max. 12 Min +/- 1 min
• Detection Range: 360°
• Detection Distance: Ceiling 1-8m(radius), Wall: 5-15m(radius),
• AdjustableAmbient Light : <3-2000LUX

Description
The LS-LDN4T Sensors is an energy-saving switch that adopts microwave Sensors with high-frequency electromagnetic waves and an integrated circuit. These microwave motion Sensors offer reliable and efficient human or animal movement detection, making them ideal for security systems, lighting control, and home automation. These Sensors use microwave technology to detect movement, offering high sensitivity and accuracy.

• Install Height: 2-6m
• Detection Motion Speed: 0.6-1.5m/s
• Working Temperature: -20℃ to +50℃
• IP Rating: IP20
• HF System: 5.8 GHz CW RADAR, ISM BAND
• Transmission Power: 0.2 mW

The product is a new saving-energy switch; it adopts microwave sensor mould with high-frequency electro-magnetic wave (5.8GHz) and integrated circuit. It gathers automatism, convenience, safety, saving energy and practical functions. The wide detection field depends on detectors. It works by receiving human motion. When one enters the detection field, it can start the load at once and identify automatically day and night. Its installation is very convenient and its using is very wide. Detection is possible to go through doors, panes of glass or thin walls.
FUNCTION:
• Can identify day and night: It can work in the daytime and at night when it is adjusted on the “sun” position (max). Itcan work in the ambient light less than 3LUX when it is adjusted on the “3” position (min). As for the adjustment pattern, please refer to the testing pattern.
• SENS adjustable: It can be adjusted according to using location. The detection distance of low sensitivity could be only 2m and high sensitivity could be 16m which fits for large room.
• Time-Delay is added continually: When it receives the second induction signals within the first induction, it will restart to time from the moment.
• Time–Delay is adjustable. It can be set according to the consumer’s desire. The minimum time is 10sec±3sec. The maximum is 12min±1min.TESTTurn the LUX knob clockwise on the maximum (sun), Turn the SENSknob clockwise on the maximum (+). Turn the TIME knob anti-clockwise on the minimum (10s).
• When you switch on the power, the light will be on at once. And10sec±3sec later the light will be off automatically. Then if the sensor
TEST:
• When the sensor receives the second induction signals within the first induction, it will restart to time from the moment.
• Turn LUX knob anti-clockwise on the minimum (3). If the ambient light is less than 3LUX (darkness), the inductorload could work when it receives induction signal.
NOTES：
• An electrician or experienced human can install it.
• Can not be installed on the uneven and shaky surface
• In front of the sensor there shouldn’t be obstructive objects affecting detection.
• Avoid installing it near the metal and glass which may affect the sensor.
• For your safety, please don’t open the case if you find a hitch after installation.
• To avoid unexpected damage of the product, please add a safe device of current 6A when installing the microwave sensor, for example, fuse, safe tube, etc.
SOME PROBLEM AND SOLVED WAY:
• The load doesn’t work:
▪ a. Check the power and the load.
▪ b. Whether the indicator light is turned on after sensing? If yes, please check load.
▪ c. If the indicator light is not on after sensing, please check if the working light corresponds to the ambient light.
▪ d. Please check if the working voltage corresponds to the power source.
• The sensitivity is poor:
▪ a. Please check if, in front of the sensor, there shouldn’t be obstructive objects that affect to receive of the signals.
▪ b. Please check if the signal source is in the detection fields.
▪ c. Please check the installation height.
• 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 corresponds to the instruction.
The LS-LDN4T Sensors is a energy-saving switch that adopts a microwave Sensors with high-frequency electromagnetic waves and an integrated circuit. This Microwave motion Sensors offer reliable and efficient human or animal movement detection, making them ideal for security systems, lighting control, and home automation. This Sensors use microwave technology to detect movement, offering high sensitivity and accuracy.
Power Source: 220-240 V AC
Rate Load: 1200W (Incandescent), 300W (LED LOAD)
Time Delay: Min. 10 sec +/- 3 sec, Max. 12 Min +/- 1 min
Detection Range: 360°
Detection Distance: Ceiling 1-8m(radius), Wall: 5-15m(radius), Adjustable
Ambient Light: <3-2000LUX
Install Height: 2-6m
Detection Motion Speed: 0.6-1.5m/s
HF System: 5.8 GHz CW RADAR, ISM BAND