会社のニュース LED Application Scenarios: Motion Radar Sensor 2835 SMD LED Aluminum PCB for Smart Downlights & Garages

Walk through any underground car park at 2 a.m. and you will usually find the lights blazing at full power for nobody. In most commercial buildings, garage and corridor lighting runs 24/7 simply because nobody wants a dark stairwell — and that one habit can quietly swallow a large share of a facility’s lighting bill. The fix is not a new luminaire. It is a smarter board behind the LEDs.

Meet the Model: Motion Radar Sensor 2835 SMD LED Aluminum PCB

Model 2835 LED PCBA is an aluminium-based LED circuit board built around 2835 SMD LED emitters, offered in 12 V, 24 V and 18 W configurations with an on-board motion radar sensor interface. Instead of bolting a separate sensor module onto a finished fixture, lamp makers get the LED array, driver footprint, sensor slot and thermal path on one metal-core board — shorter assembly time, fewer wires, and a far more consistent light output from unit to unit.

Five Application Scenarios Where This Board Pays for Itself

1. Underground & Semi-Open Parking Garages

Ramps, drive aisles and parking bays sit empty most of the night. With a radar-sensing 2835 board, fixtures can hold a 20–30% standby level for safe wayfinding and jump to full output the moment a vehicle or pedestrian enters the zone.

2. Hotel, Office and Residential Corridors

Corridor lighting is the classic “always on” line item. A motion-triggered downlight built on this board keeps lift lobbies and fire escape routes visibly lit at low level, then lifts to full brightness for the seconds that matter.

3. Warehouses and Logistics Aisles

High-bay aisles see forklift traffic in bursts. Radar sensing works through dust, humidity and non-metallic packaging — conditions that regularly blind PIR sensors — so racking lights respond to real activity.

4. Public Restrooms, Stairwells and Elevator Halls

Short, unpredictable visits are exactly where timed sensing shines. Set a 15–60 second hold time and the space is lit before the door finishes opening.

5. OEM Smart Downlight Programmes

Because the sensor slot, LED array and driver footprint share one board, brands can launch a sensor-enabled downlight without redesigning a housing. Board shape is fully customisable — round, rectangular, slotted, cut-out or irregular — and solder mask colour can match the fixture’s design language.

Three-Stage Control Logic Worth Copying

Design Notes for OEM Engineers

• Keep the sensor clear of the driver: leave a keep-out area around the radar antenna — switching regulators and metal shielding will shrink detection range.
• Respect the thermal path: use the aluminium core as the heat spreader and keep LED pitch uniform so the 2835 emitters age at the same rate.
• Match the driver: drive the array with a constant-current supply sized to the 12 V or 24 V rail, and add an ambient-light threshold so daytime motion does not wake the fixture.
• Plan for retrofit: specify the board outline once and re-use the same stamping tool across 6 W, 12 W and 18 W versions.

From a Factory That Has Been Doing This Since 2005

Boards like this are core business for Dongguan Lanjin Optoelectronics Co., Ltd. (东莞市蓝晋光电有限公司), trading under the BOSMFC brand. Established in 2005, the company runs a 2,500 m² plant with a constant-temperature, anti-static production workshop, holds ISO9001:2015 certification, and manufactures SMD LED, through-hole LED, LED displays and custom LED PCB assemblies. All products comply with EU RoHS, and the factory offers sampling in 3–5 working days plus full OEM/ODM support on board outline, copper weight, solder mask colour and LED binning.

If you are developing a sensor downlight, corridor fixture or garage luminaire, send your drawing and target wattage to the Lanjin team — they will quote the 2835 LED PCBA against your housing, not against a catalogue guess.