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GrowPros HM660 LED Grow Light  - LED Grow Lights Depot
GrowPros HM660 LED Grow Light  - LED Grow Lights Depot
GrowPros HM660 LED Grow Light  - LED Grow Lights Depot
GrowPros HM660 LED Grow Light  - LED Grow Lights Depot
GrowPros HM660 LED Grow Light  - LED Grow Lights Depot
GrowPros HM660 LED Grow Light  - LED Grow Lights Depot
GrowPros HM660 LED Grow Light  - LED Grow Lights Depot

GrowPros HM660 LED Grow Light

  • Availability: In stock.
    • Free shipping in the USA (lower 48 states)
    • Ships discreetly
    • Ships in 1-3 business days

    HM660 Series

    A full-spectrum LED rack lighting solution designed for commercial indoor and greenhouse applications, enabling control over the plant cycle from the vegetative stage to the flowering stage. Indoor plants grow best under full-spectrum lights, which replicate the natural spectrum of the sun. The HM660 Series, with an increased lifespan over traditional grow light sources, cultivates healthier, happier plants.

    Performance Data

    The HM660 Series produces 1.8 gram per watts (dried) of crop yield. A high-PPFD and PAR indicates high efficacy, or light output produced per expenditure of unit of power. Generating about 50% more in energy savings over traditional HID and HPS light sources, the HM660 gives you meaningful savings over time. Will not produce the same results without CO2 supplementation. cULus Listed; Dry and Damp Location Rated; 7-Year Warranty.

    The HM660 Advantage

    Better control of environmental and production factors means higher yield and multiple harvests in one growing season. No wasted energy: Almost 100% of power expended converts into growth-targeted light energy. The HM660 lighting system is a complete, pre-assembled LED grow light that lowers installation time with a wide range of wiring techniques and connectors. The HM660 Series system runs cool thanks to a passive cooling thermal management system, meaning your lighting systems last longer while retaining high light output levels. Longer lifespan means you can grow crops for many years without needing to replace the lighting system, reducing costs.


    Features & Benefits

    • Compatible with TrolMaster system+Adapter LMA-14 
    • Added one extension bar on each side to cover 3’ x 6’ or 4’ x 6’ grow tray 
    • Total of 3500 pcs LED diodes on the fixture including deep red led diode 
    • Come with 120-277V AC output quick access outlet on the fixture 
    • Foldable design, easy installation 
    • Up to 30% more energy saving than traditional HID and HPS 
    • Optimized spectrum proven by growers for veg and flowering 
    • Superior delivered PPF and PAR exceeding 1000W HPS 
    • Scientifically engineered to maximize photosynthesis, growth, and yield  

    DIMMER: The HM660 comes with an integral dimmer that you can adjust to 25, 50, 75, 100, and 110 percent for an extra boost of power.

    CONTROL SYSTEM: Works with TrolMaster Hydro control systems. You will need to use a lighting control adapter F(LMA-14). When you put the dimmer in EXT mode, it is ready to connect to the control system (If you daisy chain these lights and use a control system to control them together, you need to switch it to EXT mode).

    EXTENDABLE BARS: The HM660 has removable end caps in order to attach additional bars to each end. Each extended bar has a 150W individual driver and the PPF is 344 umol/s. It is ideal for hanging on top of a 3’ x 6’ or 4’ x 6’ grow tray



    • Vegetative stage is 75% power at about 24”-48” high



    • 1-2 week is 75% power at 24” high
    • 3-6 week is 75% power at 18” high
    • 7-8 week is 100% power at 12” high
    • 9-10 week is 110% power at 12” high






    PERFORMANCE DATA 660W (100%) @ 12"H 720W (110%) @ 12"H
    PPF 1716 μmol/s 1820 μmol/s
    PPFD 1188 μmol/m2/s 1275 μmol/m2/s
    PPE 2.6 μmol/J 2.6 μmol/J



    What's In The Box

      • 1x network cable for daisy chain
      • 1x 120-240V plug adapter
      • 2x steel wire sling
      • 2x 1/8 lifting pulley hoist rope hook
      • 4x thumb screw


      Additional Info

      Spec Sheet 




      Wattage660W (Boost up to 720W)
      Heat Load: 2148 BTU

      Input Power: 120V-277V
      • 120V: 5.96A @ 713W
      • 208V: 3.50A @ 700W
      • 240V: 2.95A @ 695W
      • 277V: 2.71A @ 685W

      Coverage Area:

      • Flower: 4’ x 4’ Area, Max 5' x 5'
      • Veg: 4’ x 4’ Area, Max 5' x 5' 
      Frequency: 50/60Hz

      Control: 0-10V dimming (0-100%), Wireless

      Power Factor: 0.9

      THD: 20%

      Thermal Management: Passive

      Working Temp: -40ºF ~ 122ºF

      IP Rating: IP44, Suitable for dry & damp locations
      Dimensions: 46.85" x 42.8" x 3"

      Weight: 30 lbs

      Warranty: 7-year limited

      Shipping / Cancellations / Returns

      Order Confirmation

      As soon as you place the order, an order confirmation will be emailed to you. This means we have received your order and payment. Payment is captured as soon as the order is placed. In rare cases, if the product is on backorder or unavailable, we will contact you and ask if you would like to wait for the product to become available, switch your product, or have your payment refunded. If the item is available for immediate shipment (1-3 business days) we will submit the order for processing and arrange shipment.

      Order Shipment

      Most products ship within 1 to 3 business days from the date of your order (unless indicated on the product page). Some items take a bit longer to ship since they are built to order (i.e., Timber Grow Lights, ChilLED Tech, Trimmers, etc). We will send you tracking information as soon as it is available. 

      U.S. Shipping

      We are based in Portland, Oregon with warehouses nationwide. We offer FREE shipping in the lower 48 states (sometimes to HI and AK, too) via FedEx, UPS, USPS or other major couriers (product/brand dependent). Expedited shipping is usually available for an extra cost. Contact us before your purchase if you prefer an expedited shipping method and we will get you a quote.

      After the order is processed, allow 2 to 7 business days for the product(s) to reach you if shipped to a U.S. address. We can ship to PO boxes in some cases. We recommend using a street/residential address instead.

      International Orders

      Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or other couriers. Most quotes can be obtained at checkout. If not, please email us to receive a shipping quote for lights shipped outside of the USA. You may also place an order on our online store for items that require a quote and we will notify you via email on the exact shipping costs. 

      Some items/brands can be shipped for free.

      Items shipped internationally from the USA may have VAT, duties, taxes, and/or local charges due at delivery. These charges are the responsibility of the customer and not LED Grow Lights Depot.


      If you need to cancel your order, we recommend reaching out to us ASAP. We charge a 2.15% (credit card / ViaBill), 2.6% (PayPal), 6% (Sezzle) order cancellation fee once the order has been processed (before it has been shipped). We can accommodate most requests, but due to the different time zones and schedules that our warehouses ship from, the cancellation request may not reach the warehouse in time. Once the item has been arranged to ship or has shipped, the package will be treated like a 'return' and is subject to ship-back fees and restocking fees. All EZTrim orders are final and non-refundable or returnable.


      We offer return shipping in the USA if you are not 100% satisfied for any reason. Many brands have a 90-day return policy. See our full Return Policy for rules and guidance on returning an item after purchase and for brand-specific return dates. A 5-25% restocking fee (brand dependent) may apply for returns within the dates of the return policy. Reach out to us for exact return instructions and restocking fees for the item(s) that you purchased.

      If you have any questions or would like to check the availability of an item, you may email us here or call us at (888) 611-9305. Thank you for shopping with us.

      Shop All LED Grow Lights

      Happy grows!

      Erik H.


      Why shop at LED Grow Lights Depot? This is why....

      1) Thousands of Successfully Shipped Orders and Thrilled Customers

      We have been in business since 2014 and are a highly-trusted online retailer offering honest grow advice and top-of-the-line LED grow lights and other grow/harvest/extraction equipment. We have thousands of 5-STAR PRODUCT REVIEWS from satisfied customers.


      2) Small, Family-Run, Veteran-Owned Business

      Founder/Owner Erik H. overseas that every customer is 100% satisfied with their purchase. If something is wrong, we will make it right, guaranteed! Call, email, or message us anytime and we will get back to you in about 1 business day or less (typically with-in minutes or hours during normal business hours). We have your back!


      3) Free Discreet Shipping in the USA 

      We offer FREE shipping in the lower 48 states via FedEx, UPS, USPS, or other popular couriers. We can ship most other products to Hawaii and Alaska for free too.


      4) Reliable International Shipping Available

      Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or similar couriers. Go through the checkout process to receive a shipping quote or contact us if a shipping quote is not available at checkout. 

      Items shipped internationally from the US may have VAT, duties, taxes, and/or local charges due at delivery. 


      5) No Sales Tax in Some States

      Forget shopping locally or on other popular retail websites that charge tax. You can save a lot of money when buying though us since we do not charge tax in some states.


      6) 100% Low Price Guarantee

      We strive to ensure that we offer the absolute best prices online. Rest assured that you are receiving the best online price when you shop with us.

      If you find a better price online before or after you order from us (for up to one month), we will match or beat the competitor's price.

      Although rare, we may refuse to offer a price match in which we incur a loss.


      7) Easy Interest-Free Financing

      Finance your purchase in minutes! See our available financing options below:

      Buy what you want today and pay for it over four installments, interest-freeLook for the Sezzle button at checkout. Get approved up to $2,500. LEARN MORE.

      No Payments + No Interest if paid in full in 6 months on purchases of $99 or more. Get approved in seconds! Select PayPal at checkout and pay with PayPal credit or APPLY HERE


      8) Route Package Protection

      Adding Route Package Protection to your order at checkout means that your order is protected against being lost, damaged, or stolen. In the unfortunate instance that you experience one of these inconveniences, you can report an issue with Route and they will work with you to make sure you get the resolution you prefer. LEARN MORE.


      9) We are Authorized Dealers offering a Manufacturer's Warranty

      You will buy confidently from us since only sell new, official products (no used items or clones). All warranties are new are 100% honored through the respective manufacturer.


      10) Safe, Secure, Discrete Transactions

      We accept major credit cards, PayPal, Google Pay, Apple Pay, Sezzle, debit transactions, bank transfers, and money orders. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.


      11) Hassle-Free Returns

      And just in case your purchase was not up to your standards, we offer return shipping if you are not 100% satisfied for any reason. See our FULL RETURN POLICY for full details.

      Customer Reviews

      Based on 1 review
      Kristopher F.

      GrowPros HM660 LED Grow Light