what its the correct ceiling junction box ? i understand should be round and 4" , or should be another size or not round?

If you are installing new, go with the 4" round ceiling box. If you are working w/ anything else, the holes might still line up and if not, you can get all sorts of adapters hardware at the local home center.

Does this pick up motion on the other side of walls? (e.g. motion not in the room)

This is a PIR (passive infrared) motion sensor, which detects infra-red signal emitted from the object (a person or a pet) to trigger the load. Therefore, the sensor can only detect motions of an infrared source in the same room, but not beyond walls. There are other type of motion sensor that uses Doppler radar signal to detect objects. J.LUMI carries another model of motion sensor, SKU YCA2002, that is a radar enabled motion sensor and can detect objects behind thin door or thin plaster doors. For that model, please search on Amazon using key words "J.LUMI YCA2002".

Are the screw holes set for mounting on a standard 4” hexagon box?

To mount on a standard 4" hexagon box, please purchase one additional mounting accessory. Search on Amazon using terms "J.LUMI YCA1050A". The listing page can be accessed via the following link (please copy and paste into your browser). https://www.amazon.com/dp/B08BYD1HPJ

can you turn off the photocell?

Not completely, but it can be turned down to just a few lux.

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J. LUMI YCA1050 PIR Based Motion Detector, Infrared Motion Sensor, Slim Design 1 Thick, 360 Degree Detection, PIR Sensor (110-240V AC, 2000W)

J. LUMI YCA1050 PIR Based Motion Detector, Infrared Motion Sensor, Slim Design 1 Thick, 360 Degree Detection, PIR Sensor (110-240V AC, 2000W)

Product ID: 213474551

Veilige transactie

Details

Brand
J.LUMI
Power Source
Corded
Item Weight
3.2 Ounces
Maximum Range
50 Feet
Mounting Type
Ceiling Mount

📏1-inch ultra slim profile

🔄360° full detection range

🌡️Energy-efficient PIR infrared sensor

Beschrijving

🚨 Slim, smart, and all-seeing—never miss a moment!

SLEEK DISCREET - Ultra-thin 1-inch design blends seamlessly with any ceiling for a modern, clutter-free look.
SMART ENERGY SAVER - PIR infrared technology detects motion without heat emission, maximizing energy efficiency.
ALL AROUND AWARENESS - 360-degree detection covers a 50-ft diameter, ensuring no movement goes unnoticed.
ADAPTIVE LIGHTING CONTROL - Built-in photocell with adjustable sensitivity automatically activates lights only when needed.
VERSATILE SAFETY SOLUTION - Perfect for homes and businesses—enhance security, convenience, and elderly safety effortlessly.

The J. LUMI YCA1050 is a cutting-edge PIR motion detector featuring an ultra-slim 1-inch profile and 360-degree detection with a 50-ft range. Utilizing energy-efficient infrared sensing and an adjustable photocell, it automatically controls lighting for enhanced security and convenience in both residential and commercial spaces.

Specificaties

Brand	J.LUMI
Color	White
Power Source	Corded Electric
Item Weight	3.2 Ounces
Maximum Range	50 Feet
Mounting Type	Ceiling Mount
Battery Description	Alkaline
Compatible Devices	Light
Product Dimensions	4.5"D x 4.5"W x 1"H
Operating Temperature	7E+1 Degrees Fahrenheit
Recommended Uses For Product	Indoor spaces, laundry rooms, hallways, garages, walk-in closets
Upper Temperature Rating	71 Degrees Fahrenheit
Manufacturer	J.LUMI
UPC	712396765943
Part Number	YCA1050
Item Weight	3.2 ounces
Item model number	YCA1050
Is Discontinued By Manufacturer	No
Voltage	120 Volts (AC)
Wattage	800 watts
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No
Description Pile	Alkaline

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