3mm Super Thick Aluminum LED PCB ( No want for radiator) DC 12V 24V 100W Constant Voltage Grow Light Board Panel DIY Parts Model / Image / PCB Thickness / Dimension / Input Type / Input Voltage / Rated Current / Connectors / Daisy Chain Quantity 1. PCB Thickness ---The 2 or three PCB are all no need for the extra warmth sink usually, three thick PCB has preferrred functionality at the temperature control. 2. Input Type --- The "Constant Voltage ( CV ) " solution is ready 80% performance of the " Constant Current ( CC ) decision base at the similar energy (because CV reply prefer some extra resistors to repair the voltage and waste some power) , however the payment of CV strength motive force is far more cost-effective than CC strength driver . So when you care the performance more, we promote the CC solution, if you care the price and not very official on this, CV answer corresponding to DC 12V / 24V is more clear-cut and convenient. 3. Chain Quantity --- The recommended variety of connections supported by way of approach of one channel of strength inputs. Excessive latest will generate many of more heat. Please develop the channel to get electricity directly from the ability driver to get rid of this restriction. DC 12V Strip : PCB Thickness: 3 ( No choose for warmth sink)Dimension: 590 x 28 Type: Constant VoltageInput Voltage: DC 12VRated Current: 2 (25W)Connectors: 2 Pairs Molex OriginalRecommend Chain Quantity: ≤ 4pcs ( Parallel connection ) , no limitation for Series connection: 80pcs ( Samsung LM281B+ 72pcs White 3000k + 8pcs Red 660nm)Net Weight: 137gRecommend Cable thickness: ≥ 0² (19AWG) ,use no longer less than 1mm² (18AWG) cable and fasten it with the connector thoroughly for 4pcs chain (parallel ) solution. Note for top current load ! The cable needs to be inserted deep within to the terminal and confirm it is well touched. Poor contact may possibly burn the terminals and PCB board . DC 24V Square : PCB Thickness: three ( No need for heat sink)Dimension: 290 x 290mmInput Type: Constant VoltageInput Voltage: DC 24VRated Current: 4 (100W)Connectors: 2 Pairs Molex OriginalRecommend Chain Quantity: ≤ 2pcs (LEDs: 370pcs ( Samsung LM281B+ 350pcs White 3000k + 20pcs Red 660nm)Net Weight: 690gRecommend Cable thickness: ≥ 0² (19AWG) , use 1² (16AWG) cable and attach it with the connector very well for 2pcs chain solution. Other Options: