A format you can position
The bar format lets you arrange several light sources across the setup. Check spacing and light levels at the edges.
Secret Jardin·LED horticultural lamps
Secret Jardin Cosmorrow Infrared 20 W – LED bar · 50 cm
Réf. SJ-COSMO-INFRARED-20W Secret Jardin
Cosmorrow Infrared 20 W · 730 nm + 2100 K white · 47 cm. Compatible 24 V DC power supply sold separately. Use as a supplement with separate control.
GrowLED since 2009
French group · indoor growing expertise
Pay in instalments
3 or 4 payments from €50 with Alma, subject to eligibility
24h express available
After dispatch, if offered at checkout
Showroom near Nancy (54)
Au Palétuvier · Champigneulles
Secret Jardin Cosmorrow Infrared 20 W...
29,89 €
Parraine tes proches
5 % pour toi & 5 % pour ton ami
Description
Product presentation
Secret Jardin · Cosmorrow Infrared 20 WSupplement the spectrum.
Supplement the spectrum.
Keep separate control.
The Cosmorrow Infrared 20 W is a 20 W spectral supplement for a main grow light. It combines 730 nm + 2100 K white. Use a separately controlled circuit and add a compatible 24 V DC power supply.
20 W730 nm + 2100 K whiteSeparate power supply
20 WNominal power
47 cmBar length
24 V DCBar input
730 nm + 2100 K white Light type
Before you choose
Check mounting and power supply
Allow for the 47 cm physical length plus fittings and cables. Usable coverage depends on height, lamp arrangement and plant light requirements. Check the layout before choosing.
The 50 and 90 cm formats have physical bar lengths of 47 and 87 cm. Bar length is not illuminated coverage. Use alongside the main light, never as the sole source.
What is included
One Cosmorrow LED bar.
What you need to add
Compatible 24 V DC power supply sold separately. Choose an output rated for each 20 W bar, compatible mountings and a timer if needed.
Check my setup →What this means for you
Practical choices for your setup
Choose according to available space, plant stage and existing equipment.
730 nm + 2100 K white
The supplement changes the spectrum reaching plants. Its effect depends on species, main lighting and exposure; it does not replace the main light.
Separate components
Choose the Cosmorrow bar and power supply separately. A compatible part can be replaced without replacing everything; check the generation and connectors.
Getting started
Install, connect, then observe
01
Mount with power disconnected
Unplug the power supply and use fittings suited to the support. Keep the light and cables secure.
02
Connect compatible parts
Check voltage, rated capacity and connectors before powering on. Never connect a 24 V bar directly to mains.
03
Adjust to the crop
Follow your version’s instructions, observe plants and measure temperature. A distance used in a test is not a universal rule.
Looking after your equipment
Unplug and allow to cool before cleaning. Gently remove dust and check fittings and cables. Do not remove a Cosmorrow bar’s transparent sleeve: it is part of its protection.
For comparison
Technical details
Data for the model described. Watts describe power, not coverage or a growing result.
| Nominal power | 20 W |
|---|---|
| Spectrum | 730 nm + 2100 K white |
| Physical length | 47 cm |
| Bar supply | 24 V DC |
| Power supply included | No |
| LED ratio | 1/3 730 nm · 2/3 2100 K |
Manufacturer sources: Manufacturer documentation · Further manufacturer document · Further documentation
Explore Secret Jardin →Before buying
A question about your setup?
Tell us your light’s model, dimensions and power supply to check compatibility.
Read questions and answers →Supplement the spectrum.
Check dimensions, included items and connections before ordering.
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Frequently asked questions
Your questions
Can the Cosmorrow Infrared LED Bar 20W 50cm be integrated into a cultivation system with differentiated management between growth and flowering without the risk of disturbing the light cycle?
This model combines roughly one third 730 nm LEDs and two thirds 2100 K warm white. It supplements a main light. Growth or flowering response depends on species and exposure, and it can also affect heating.
What is the precise wavelength of infrared on this LED bar, and how does it influence the flowering phase in hydroponics?
This model combines roughly one third 730 nm LEDs and two thirds 2100 K warm white. It supplements a main light. Growth or flowering response depends on species and exposure, and it can also affect heating.
The IP65 rating of Cosmorrow bars concerns dust and water-jet protection; it does not permit immersion or make every supply and connection waterproof. Keep connections dry and retain the protective sleeve. Hydroponic use does not remove these precautions.
Can the infrared intensity of the LED bar be adjusted to optimize photosynthesis without excessively heating the crop?
No connected control or built-in dimming is documented for this version. A compatible timer or switched outlet can control mains power to the supply; this does not add dimming, spectrum adjustment or temperature/humidity sensing. Check load and inrush-current ratings.
This LED produces heat: low wattage or passive cooling does not mean no heating. Keep components ventilated and measure temperature near foliage. No fixed surface temperature or quantified comparison with another light is verified for all conditions.
Does the 20w infrared LED bar of 50cm effectively promote growth in addition to a main lamp without hindering thermal management in a well-ventilated box?
This LED produces heat: low wattage or passive cooling does not mean no heating. Keep components ventilated and measure temperature near foliage. No fixed surface temperature or quantified comparison with another light is verified for all conditions.
What is the light output in µmol/s of this 20W infrared LED bar 50cm and what is its photon efficiency in µmol/J?
The precise figure requested is not confirmed for the revision and measurement conditions in your question. PPF is total emitted photon flux; PPFD is the light received per square metre at a specified distance and grid. No validated map for the height and setup in your question is provided here. Lumens do not convert directly to PAR, and these measurements do not predict grams per watt.
What is the best method to integrate this 20W infrared LED bar into the growth and flowering cycle without disrupting the natural development of the plants?
This model combines roughly one third 730 nm LEDs and two thirds 2100 K warm white. It supplements a main light. Growth or flowering response depends on species and exposure, and it can also affect heating.
What is the precise wavelength emitted by this Cosmorrow 20W infrared LED bar and how does it influence the growth cycle in hydroponics?
This model combines roughly one third 730 nm LEDs and two thirds 2100 K warm white. It supplements a main light. Growth or flowering response depends on species and exposure, and it can also affect heating.
The precise figure requested is not confirmed for the revision and measurement conditions in your question. PPF is total emitted photon flux; PPFD is the light received per square metre at a specified distance and grid. No validated map for the height and setup in your question is provided here. Lumens do not convert directly to PAR, and these measurements do not predict grams per watt.
The IP65 rating of Cosmorrow bars concerns dust and water-jet protection; it does not permit immersion or make every supply and connection waterproof. Keep connections dry and retain the protective sleeve. Hydroponic use does not remove these precautions.
What is the precise light intensity and infrared wavelength emitted by the Cosmorrow 20W 50cm LED bar to optimize growth without overheating under high humidity?
The precise figure requested is not confirmed for the revision and measurement conditions in your question. PPF is total emitted photon flux; PPFD is the light received per square metre at a specified distance and grid. No validated map for the height and setup in your question is provided here. Lumens do not convert directly to PAR, and these measurements do not predict grams per watt.
This LED produces heat: low wattage or passive cooling does not mean no heating. Keep components ventilated and measure temperature near foliage. No fixed surface temperature or quantified comparison with another light is verified for all conditions.
The IP65 rating of Cosmorrow bars concerns dust and water-jet protection; it does not permit immersion or make every supply and connection waterproof. Keep connections dry and retain the protective sleeve. Hydroponic use does not remove these precautions.
What is the compatibility of the Cosmorrow Infrared 20W 50cm LED bar with the growth and flowering phases?
This model combines roughly one third 730 nm LEDs and two thirds 2100 K warm white. It supplements a main light. Growth or flowering response depends on species and exposure, and it can also affect heating.
What surface temperature does the Cosmorrow infrared LED bar 20W 50cm emit during continuous operation to properly manage plant heat?
This LED produces heat: low wattage or passive cooling does not mean no heating. Keep components ventilated and measure temperature near foliage. No fixed surface temperature or quantified comparison with another light is verified for all conditions.
Wattage and length alone do not guarantee coverage, plant count or penetration through dense foliage. Check dimensions, then light at the centre and edges for the plant stage. Different species may need different levels or schedules.
What is the precise electrical consumption in kWh for a 12-hour growth cycle per day over 30 days with this Cosmorrow Infrared LED bar 20W 50cm and what is its light yield in micromoles per joule (umol J)?
Nominal power is 20 W: energy = 0.02 kW × operating hours. For 12 h, the nominal calculation gives 0.24 kWh; over 30 days, 7.2 kWh. Cost depends on your tariff. Measure supply losses and other devices at the outlet; these calculations do not prescribe a photoperiod.
The precise figure requested is not confirmed for the revision and measurement conditions in your question. PPF is total emitted photon flux; PPFD is the light received per square metre at a specified distance and grid. No validated map for the height and setup in your question is provided here. Lumens do not convert directly to PAR, and these measurements do not predict grams per watt.
This light guarantees no yield quantity, growth speed or disease prevention. Species, received light, climate, water and nutrition work together. Comparing HPS, CMH or another LED requires matched test conditions.
What is the optimal cultivation area size for a Cosmorrow Infrared LED bar 20W 50cm to maximize yield while limiting heat?
Wattage and length alone do not guarantee coverage, plant count or penetration through dense foliage. Check dimensions, then light at the centre and edges for the plant stage. Different species may need different levels or schedules.
This light guarantees no yield quantity, growth speed or disease prevention. Species, received light, climate, water and nutrition work together. Comparing HPS, CMH or another LED requires matched test conditions.
What is the light yield in µmol/J of the Cosmorrow Infrared 20W 50cm LED bar and how does it perform in terms of heat dissipation compared to other similar infrared LEDs?
The precise figure requested is not confirmed for the revision and measurement conditions in your question. PPF is total emitted photon flux; PPFD is the light received per square metre at a specified distance and grid. No validated map for the height and setup in your question is provided here. Lumens do not convert directly to PAR, and these measurements do not predict grams per watt.
This light guarantees no yield quantity, growth speed or disease prevention. Species, received light, climate, water and nutrition work together. Comparing HPS, CMH or another LED requires matched test conditions.
This LED produces heat: low wattage or passive cooling does not mean no heating. Keep components ventilated and measure temperature near foliage. No fixed surface temperature or quantified comparison with another light is verified for all conditions.
What is the surface temperature of the Cosmorrow Infrared 20W LED bar during continuous operation to assess the thermal impact on plants?
This LED produces heat: low wattage or passive cooling does not mean no heating. Keep components ventilated and measure temperature near foliage. No fixed surface temperature or quantified comparison with another light is verified for all conditions.
Wattage and length alone do not guarantee coverage, plant count or penetration through dense foliage. Check dimensions, then light at the centre and edges for the plant stage. Different species may need different levels or schedules.
Can this 20w 50cm infrared LED bar be used in parallel with a main LED light without the risk of overheating or excessive electricity consumption to optimize plant growth during two different growing cycles?
This bar needs a compatible 24 V DC supply rated for 20 W per bar, sold separately. A Cosmorrow 1×20 W supply powers one bar and 2×20 W powers two. A third-party supply must match constant voltage, polarity, connector and required capacity.
This LED produces heat: low wattage or passive cooling does not mean no heating. Keep components ventilated and measure temperature near foliage. No fixed surface temperature or quantified comparison with another light is verified for all conditions.
Nominal power is 20 W: energy = 0.02 kW × operating hours. Without a fixed daily duration, one daily or monthly total would not be justified. Cost depends on your tariff. Measure supply losses and other devices at the outlet; these calculations do not prescribe a photoperiod.
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