OS DD21 Series (COB)

Indoor Luminaries

LED RECESSED COB DOWNLIGHT – OS DD21 Series

The OS DD 21 Series is an LED Recessed COB Downlight with a smooth diffuser and a flush design. This downlight delivers direct, even illumination, ideal for spaces that prioritize sleek aesthetics and efficient lighting. Its high lumen output makes it perfect for high ceilings, providing bright and unobtrusive lighting that enhances the overall ambiance.

Application : Hypermarket, Shopping Complexes, Office, Hotels, Laboratory, Hospitals, Restaurants, Living Areas, Shops
Certificate : SIRIM, ST
Colour : White Texture

Body Fabricated from Aluminium Alloy Rim & Housing
Diffuser Polycarbonate (PC) Opal Diffuser
Heatsink Aluminium
Clip Stainless Steel Spring Clips with Heat Shrink Tube
Connector Nylon Connecting Devices
Finishing Electrostatically Polyester Powder Coated
Mounting Type Recessed Ceiling Mounted
Driver TRIDONIC Advanced / Essence
Lamp TRIDONIC Advanced COB

 

Model OS DD521 OS DD621 OS DD721 OS DD921 OS DD1121
Shape Round Round Round Round Round
TRIDONIC LED Driver LC 15 ADV2
or
LC 17 SNC4		 LC 25 SNC2
or
LC 21 ADV2		 LC 15 ADV2
or
LC 17 SNC4		 LC 25 SNC2
or
LC 21 ADV2		 LC 35 ADV
or
LC 36 SNC4		 LC 45 SNC2
or
LC 42 SNC4		 LC 45 SNC2
or
LC 42 SNC4
System Lumen (lm) 1500 2000 1500 2000 2800 3000 4000 4000
System Power (W) 14 20 14 20 27 30 40 40
System Current (A) 0.07 0.09 0.07 0.09 0.12 0.13 0.18 0.18
Efficacy (lm/W) 107 100 107 100 104 100 100 100
Main Supply (V, Hz) 220~240V, 50/60Hz
IP Grade IP 20
Classification Class I
Power Factor PF ≥ 0.9
Operating Temperature (ta) 0°C ~ 35°C
Max. Casing Temperature (tc) 105°C
Rated Lifespan 60,000 hrs
CRI > 80 Ra
SDCM ≤ 3
Beam Angle 110°
Available CCT Warm White (3000K), Cool White (4000K)

 

Model Product
Weight (Kg)		 Inner Carton Size (mm) Outer Carton Size (mm) Gross
Weight (Kg)		 Quantity
L W H L W H
OS DD521 0.55 Kg 286 mm 165 mm 85 mm 575 mm 340 mm 455 mm 11.65 Kg 20 pcs / Carton
OS DD621 0.57 Kg 285 mm 195 mm 95 mm 575 mm 395 mm 503 mm 12.03 Kg 20 pcs / Carton
OS DD721 0.79 Kg 280 mm 223 mm 110 mm 580 mm 470 mm 350 mm 10.13 Kg 12 pcs / Carton
OS DD921 0.90 Kg 255 mm 250 mm 152 mm 522 mm 510 mm 485 mm 11.71 Kg 12 pcs / Carton
OS DD1121 1.11 Kg 305 mm 305 mm 157 mm 618 mm 310 mm 490 mm 13.97 Kg 12 pcs / Carton

 

Model Luminaires Dimension (mm) Cut-Out (mm)
Wattage TRIDONIC LED Driver Colour Temperature, CCT (K) D D2 H H2
OS DD521 14 W LC 15/350/42 fixC SC ADV2 3000K/4000K ⌀140 mm ⌀108 mm 67 mm 30mm ⌀120 mm
LC 17/250-400/42 flexC SC SNC4
20 W LC 25/500/43 fixC SC SNC2
LC 25/500/43 fixC SR SNC2
LC 21/500/42 fixC SC ADV2
OS DD621 14 W LC 15/350/42 fixC SC ADV2 3000K/4000K ⌀170 mm ⌀134 mm 67 mm 30mm ⌀145 mm
LC 17/250-400/42 flexC SC SNC4
20 W LC 25/500/43 fixC SC SNC2
LC 25/500/43 fixC SR SNC2
LC 21/500/42 fixC SC ADV2
OS DD721 27 W/
30 W		 LC 35W 500-800mA flexC SC ADV 3000K/4000K ⌀200 mm ⌀155 mm 93 mm 30mm ⌀165 mm
LC 36/700-850/42 flexC SC SNC4
OS DD921 40 W LC 45/1050/43 fixC SC SNC2 3000K/4000K ⌀240 mm ⌀191 mm 102 mm 30mm ⌀200 mm
LC 42/900-1050/42 flexC SC SNC4
OS DD1121 40 W LC 45/1050/43 fixC SC SNC2 3000K/4000K ⌀300 mm ⌀222 mm 117 mm 30mm ⌀235 mm
LC 42/900-1050/42 flexC SC SNC4
DTS 1:
Data Sheet – OS DD521 (TRIDONIC SLE 09mm 1200lm 8xx R ADV8) (TRIDONIC LED Driver) (14W & 20W)
Download File
DTS 2:
Data Sheet – OS DD621 (TRIDONIC SLE 09mm 1200lm 8xx R ADV8) (TRIDONIC LED Driver) (14W & 20W)
Download File
DTS 3:
Data Sheet – OS DD721 (TRIDONIC SLE 15mm 4000lm 8xx R ADV8) (TRIDONIC LED Driver) (27W & 30W)
Download File
DTS 4:
Data Sheet – OS DD921 (TRIDONIC SLE 15mm 4000lm 8xx R ADV8) (TRIDONIC LED Driver) (40W)
Download File
DTS 5:
Data Sheet – OS DD1121 (TRIDONIC SLE 15mm 4000lm 8xx R ADV8) (TRIDONIC LED Driver) (40W)
Download File