This state-of-the-art LED grow light boasts a cutting-edge Wi-Fi module, (not required, but it's super cool) enabling remote operation with a compatible smartphone. Monitor and adjust individually or link multiple Square 3 V2's for large-scale illumination. Extremely easy to operate, the FGI Square 3 V2 Smart LED Grow Light Full Spectrum Plus 730nm Far Red boasts reliable on/off and dimming control, as well as an integrated temperature sensor that auto-dims the unit if temperatures exceed a pre-defined level. FGI Square 3 V2 Smart LED Grow light features set-it-and-forget-it memory; even in cases of Wi-Fi disconnection, the light will remain operating as programmed. Additionally, even with no Wi-Fi access, the light can still be controlled via an on/off timer. Our 365-day money back guarantee ensures that you are fully protected with Forever Green Indoors. If you're serious about growing healthy, bountiful plants, the FGI Square 3 is the perfect choice. FGI Square 3 V2 Smart LED Grow Light Full Spectrum Plus 730nm Far Red harnesses our proprietary blend of four LED diodes (warm white, cool white, red, and far red) to create a spectrum that accurately mimics the sun's natural lighting. Here is a comparison to natural sunlight and fluorescent lighting.  Forever Green's time tested grow light spectrum comparison  Our WeatherEFX controller allows you to mimic natural light to optimize plant growth. Optionally, the controller adjusts intensity and spectrum of your LED using either local weather and sunrise/sunset data or custom programming. You can simulate different light conditions throughout the day. Cloud Intelligence provides remote access to monitor the lights from any location.Take your garden to the next level with more natural lighting using FGI's WeatherEFX. Learn more about WeatherEFX, and the Cloud Intelligence App on YouTube here:    Square 3 Product Manual  Wifi Controller Manual and Troubleshooting Guide  FEATURES Lightweight - just 13 lbs Slim - 3" deep Cool - won't add too much heat 4 push button dimming settings   COVERAGE The Square 3 is designed for flowering in 3'x3' spaces at up to 1000 umols/ms. (CO2 recommended for this light level). Or grow at 800 umols/ms without CO2. It can be used for Veg when dimmed. And when fully dimmed can be used over clones and starts too.Below are PAR readings with the lights at three different distances. At 24" expect PPFD to be above 1000 umols/ms, but not as uniform. At 30" PAR will be above 750 umols/ms. This is an ideal light level if not using supplemental CO2. These levels are equal to a typical HPS grow space.At 36" light levels become more uniform from corner to corner but at 680 umols are below what we'd recommend for flower.At 48", light levels are the most uniform and are perfect for mature veg plants. Use the built in dimmer to reduce intensity for young veg plants. Product Manuals:  Square 3 Product Manual  Wifi Controller Manual and Troubleshooting Guide  SPECIFICATIONS FGI Square 3 V2 WiFi LED Grow LightDiodes (White)Diodes Brand name: Shenzhen Lideda Number of pieces 960 CCT 4000K CRI 80CRI Other color Diodes (Red) Brand Name: Shenzhen Lideda Number of pieces 256 CCT NA Wavelength 655-665nm Other color Diodes (FR) Brand Name: Shenzhen Lideda Number of pieces 64 CCT NA Wavelength 730-745nm Ratio mix white/red (%) 3:1Product Warranty/Longevity Warranty (years) 5 years Lifetime (L-90) - in hours 50,000 hours Photosynthetic Light Measurements PPF Output* 1120 umol/s PPF Efficacy* PPF 2.58umols/j Photopic Light Measurements Luminous Flux* 67,000 lm Luminous Flux Efficacy 168 lm/w Other Input Power Watts 310W Input Voltage 110V Cord length 8' (2.44m, 18AWG ) Plug type (note if bare whip) Molded 110V Product Dimensions Dimensions W x L x H (inches) 22 x 22 x 3.5 Weight (pounds) 13 Operating Temp range (F) -20℃ — +40℃ IP rating IP20 Rating CSAPhysical Dimensions Package Dimension W x L x H (inches) 27 x 26 x 6.5 Dimming / Tuning: Push button / Wifi App Product Warranty: 3 years against defects. See our warranty policy page for details.