On All Orders
Guaranteed or We’ll Match It
No Sales Tax—Except in Michigan
Always hassle free
(844) 873-5764
Take Full Control of Your Lighting Network
The Growers Choice Master Controller is a professional-grade digital lighting controller designed to manage up to 200 fixtures across two zones. With dual thermal probes, auto dim/shutdown safety features, and built-in sunrise/sunset simulation, it offers precise and scalable control for serious growers using CMH, DE, and ROI Series LEDs.
✔️ Control Up to 200 Fixtures
Supports 2 channels with 100 fixtures each for full-scale environments
💡 Dual Thermal Probes for Temperature Monitoring
Provides real-time readings and triggers safety actions if needed
📱 Sunrise/Sunset Scheduling
Mimics natural light cycles to support healthy plant growth
🔌 Auto Dim & Shutdown Protection
Automatically adjusts output or powers down fixtures to prevent overheating
🛡️ Wide Compatibility
Works with GC-315 CMH, GC-630NS CMH, GC-1000 DE, and all ROI Series LEDs
🚚 Fast, Free U.S. Shipping
Ships quickly from authorized U.S. warehouses
Designed for commercial and high-performance growing environments, the GC Master Controller ensures every light in your system responds precisely and safely. With dual zones, temperature-based automation, and compatibility across Growers Choice’s full fixture lineup, it’s a must-have for serious cultivators.
Dual-Zone Fixture Control
Manage up to 100 fixtures per zone—perfect for separating veg and flower areas or scaling multi-room facilities.
Thermal-Protected Dimming & Shutdown
Automatically dims or powers down lights if ambient temperatures exceed thresholds, protecting plants and equipment.
Sunrise/Sunset Simulation
Gently ramps lighting intensity up or down to support plant health and reduce stress.
Commercial grow rooms using multiple light types
Facilities with CMH, DE, or ROI LED fixtures
Multi-zone indoor growing systems
Operations requiring automation and thermal safeguards
Wipe screen and sensor ports monthly to prevent dust buildup
Mount controller in a dry, climate-stable location
Regularly test thermal probe accuracy for safety reliability
Keep firmware updated if manufacturer releases version upgrades
1x Growers Choice Master Controller
2x Thermal Sensor Probes
1x Mounting Bracket
1x Power Adapter
1x User Manual
Control Voltage Outputs: 2 Groups (A/B)
Max Fixtures per Output: 100 fixtures (200 total)
Max Cable Length per Group: 100 meters
Overheat Protection: Yes
Sunrise/Sunset Function: Yes
Input Voltage: DC 5V / 2000mA
Weight: 1.0 kg
Warranty: 3 Years
Q: How many fixtures can this controller manage?
A: Up to 200 total—100 per zone across two channels.
Q: What lights is this compatible with?
A: Works with GC-315 CMH, GC-630NS CMH, GC-1000 DE, and all ROI Series LED lights.
Q: Does it have sunrise and sunset functionality?
A: Yes, it simulates gradual light increase and decrease to support plant health.
Q: What safety features are included?
A: Dual thermal probes monitor heat and trigger auto dimming or shutdown when temps exceed safe limits.
Q: What's the warranty on this unit?
A: Covered by a 3-Year Manufacturer Warranty.
3-Year Manufacturer Warranty covering controller electronics, temperature sensors, and hardware. U.S.-based customer support included.
Who We Are
At Garden GrowShop, we're not a faceless online retailer. We're a small, family-run business with real roots in the growing community. Every product we carry has been carefully chosen to meet the needs of both home growers and commercial operators — because we’ve walked in your shoes.
Personal, Knowledgeable Support
When you reach out to us, you’re not getting a canned reply or being passed between departments. You're talking to someone who actually knows the products, understands your challenges, and is here to help you succeed.
Transparent Pricing — No Gimmicks
We believe in fair, honest pricing. No inflated markups, no bait-and-switch tactics. If you ever find a better price on the same item, let us know — we’ll match it without the hassle.
Fast, Dependable Shipping
We ship directly from warehouses across the U.S. to get your order to you quickly and reliably. No inflated delivery timelines, and no surprise shipping fees — just smooth, on-time delivery you can count on.
A Partnership, Not a Transaction
Our customers stick with us because we treat them like partners. Whether you're outfitting a small indoor setup or managing a large-scale operation, we’re here to grow with you — not just sell you equipment.
Our Commitment
If something goes wrong, we don’t pass the buck. We work with you directly to make it right. That’s how we’ve built our business, and that’s how we plan to keep it.
Shipping Policy
Free Shipping Within the Continental U.S.
We offer free shipping on all orders shipped to addresses within the continental United States. There are no hidden fees, minimum order requirements, or handling charges. The price you see at checkout is the final price you pay.
Order Processing
Orders are typically processed within 1–2 business days (Monday–Friday). If an item is temporarily backordered or delayed, we’ll notify you by email with an updated shipping estimate.
Shipping Confirmation & Tracking
Once your order has shipped, we’ll email you a shipping confirmation that includes tracking information. You can use this to monitor the delivery status of your package in real time.
Estimated Delivery Time
Most orders arrive within 3–7 business days of shipping, depending on your location and the item’s warehouse origin. Freight items and oversized packages may take additional time.
Shipping Carriers
We use trusted carriers such as FedEx, UPS, USPS, and professional freight delivery services for large or heavy items. Depending on the size of your order, it may arrive in multiple packages or from multiple warehouses.
Delivery and Moving Disclaimer
Please note: We do not offer moving or installation services. For freight shipments or large items, carriers are only responsible for curbside delivery. Drivers are not required to move items inside your home, up stairs, or to specific locations. We strongly recommend having assistance available at the time of delivery for heavy or bulky shipments.
Address Accuracy & Order Changes
Please ensure your shipping address is correct at the time of checkout. Once an order has shipped, we are unable to change the delivery address or reroute the shipment. If you need to make changes to your order, contact us immediately after placing it.
Damaged or Lost Shipments
If your order arrives damaged or appears to be lost in transit, contact us within 48 hours of delivery (or expected delivery). We will work with the carrier to resolve the issue as quickly as possible.
Shipping Restrictions
We currently ship only to addresses within the continental United States. We do not ship to Alaska, Hawaii, U.S. territories, or international destinations.
Questions?
If you have questions about your order, delivery, or shipping process, feel free to reach out to us through our Contact Us page or via email. We’re here to help.
Start of Returns section
Easy Returns, No Surprises
At Garden GrowShop, we stand behind the quality of every product we carry. But we also understand that sometimes things just don’t work out — and that’s okay. If you change your mind or the item isn’t quite what you expected, we’ve got you covered.
You have 30 days from the date of delivery to request a return for any reason. To start a return, simply email us at sales@gardengrowshop.com with your order number and we’ll walk you through the process.
Here’s what to expect:
You’ll receive clear return instructions from our team.
Once your item is received and inspected, we’ll issue a refund to your original payment method.
Items must be returned in “like new” condition, with all original packaging and accessories.
Return shipping costs are the responsibility of the customer.
“Like new” means no visible wear, damage, or missing parts. Items showing signs of use or misuse may not qualify for a refund.
If your order arrives damaged or defective, don’t worry — we’ll take care of it.
Here’s what to do:
Note any damage with the delivery driver when signing for the package.
Email photos and a description of the issue to sales@gardengrowshop.com on the same day you receive it.
We’ll cover the cost of return shipping and make sure a replacement is sent out quickly.
Please keep all original packaging in case a return is needed. This helps speed up the process and ensures a smooth resolution.
If you need to cancel your order, please contact us as soon as possible at sales@gardengrowshop.com or by phone.
Cancellations before shipment receive a full refund.
Cancellations after shipment will follow our standard return policy and may be subject to return shipping costs.
Certain products may have brand-specific return restrictions, which will be noted on the product page.
Products purchased for temporary or single-use purposes (e.g. trade shows, promotional events) are not eligible for return.
We’re Here to Help
Our goal is to make returns and exchanges as easy as possible — with no stress and no surprises. If you’re unsure whether your order qualifies or just want to ask a question, don’t hesitate to reach out. We’re here to make sure you feel confident before and after your purchase.
We’re an authorized dealer for every brand we sell—so you’ll always get full manufacturer warranties, premium support, and authentic gear direct from the source.
✅ Fast, tracked shipping on all orders
✅ 100% safe and secure checkout
✅ No restocking fees on returns
✅ Friendly U.S.-based support when you need it
Have questions? We're here to help. Whether you're just getting started or scaling up a full grow, our experts can guide you to the right gear.
Take Full Control of Your Lighting Network
The Growers Choice Master Controller is a professional-grade digital lighting controller designed to manage up to 200 fixtures across two zones. With dual thermal probes, auto dim/shutdown safety features, and built-in sunrise/sunset simulation, it offers precise and scalable control for serious growers using CMH, DE, and ROI Series LEDs.
✔️ Control Up to 200 Fixtures
Supports 2 channels with 100 fixtures each for full-scale environments
💡 Dual Thermal Probes for Temperature Monitoring
Provides real-time readings and triggers safety actions if needed
📱 Sunrise/Sunset Scheduling
Mimics natural light cycles to support healthy plant growth
🔌 Auto Dim & Shutdown Protection
Automatically adjusts output or powers down fixtures to prevent overheating
🛡️ Wide Compatibility
Works with GC-315 CMH, GC-630NS CMH, GC-1000 DE, and all ROI Series LEDs
🚚 Fast, Free U.S. Shipping
Ships quickly from authorized U.S. warehouses
Designed for commercial and high-performance growing environments, the GC Master Controller ensures every light in your system responds precisely and safely. With dual zones, temperature-based automation, and compatibility across Growers Choice’s full fixture lineup, it’s a must-have for serious cultivators.
Dual-Zone Fixture Control
Manage up to 100 fixtures per zone—perfect for separating veg and flower areas or scaling multi-room facilities.
Thermal-Protected Dimming & Shutdown
Automatically dims or powers down lights if ambient temperatures exceed thresholds, protecting plants and equipment.
Sunrise/Sunset Simulation
Gently ramps lighting intensity up or down to support plant health and reduce stress.
Commercial grow rooms using multiple light types
Facilities with CMH, DE, or ROI LED fixtures
Multi-zone indoor growing systems
Operations requiring automation and thermal safeguards
Wipe screen and sensor ports monthly to prevent dust buildup
Mount controller in a dry, climate-stable location
Regularly test thermal probe accuracy for safety reliability
Keep firmware updated if manufacturer releases version upgrades
1x Growers Choice Master Controller
2x Thermal Sensor Probes
1x Mounting Bracket
1x Power Adapter
1x User Manual
Control Voltage Outputs: 2 Groups (A/B)
Max Fixtures per Output: 100 fixtures (200 total)
Max Cable Length per Group: 100 meters
Overheat Protection: Yes
Sunrise/Sunset Function: Yes
Input Voltage: DC 5V / 2000mA
Weight: 1.0 kg
Warranty: 3 Years
Q: How many fixtures can this controller manage?
A: Up to 200 total—100 per zone across two channels.
Q: What lights is this compatible with?
A: Works with GC-315 CMH, GC-630NS CMH, GC-1000 DE, and all ROI Series LED lights.
Q: Does it have sunrise and sunset functionality?
A: Yes, it simulates gradual light increase and decrease to support plant health.
Q: What safety features are included?
A: Dual thermal probes monitor heat and trigger auto dimming or shutdown when temps exceed safe limits.
Q: What's the warranty on this unit?
A: Covered by a 3-Year Manufacturer Warranty.
3-Year Manufacturer Warranty covering controller electronics, temperature sensors, and hardware. U.S.-based customer support included.
Who We Are
At Garden GrowShop, we're not a faceless online retailer. We're a small, family-run business with real roots in the growing community. Every product we carry has been carefully chosen to meet the needs of both home growers and commercial operators — because we’ve walked in your shoes.
Personal, Knowledgeable Support
When you reach out to us, you’re not getting a canned reply or being passed between departments. You're talking to someone who actually knows the products, understands your challenges, and is here to help you succeed.
Transparent Pricing — No Gimmicks
We believe in fair, honest pricing. No inflated markups, no bait-and-switch tactics. If you ever find a better price on the same item, let us know — we’ll match it without the hassle.
Fast, Dependable Shipping
We ship directly from warehouses across the U.S. to get your order to you quickly and reliably. No inflated delivery timelines, and no surprise shipping fees — just smooth, on-time delivery you can count on.
A Partnership, Not a Transaction
Our customers stick with us because we treat them like partners. Whether you're outfitting a small indoor setup or managing a large-scale operation, we’re here to grow with you — not just sell you equipment.
Our Commitment
If something goes wrong, we don’t pass the buck. We work with you directly to make it right. That’s how we’ve built our business, and that’s how we plan to keep it.
Shipping Policy
Free Shipping Within the Continental U.S.
We offer free shipping on all orders shipped to addresses within the continental United States. There are no hidden fees, minimum order requirements, or handling charges. The price you see at checkout is the final price you pay.
Order Processing
Orders are typically processed within 1–2 business days (Monday–Friday). If an item is temporarily backordered or delayed, we’ll notify you by email with an updated shipping estimate.
Shipping Confirmation & Tracking
Once your order has shipped, we’ll email you a shipping confirmation that includes tracking information. You can use this to monitor the delivery status of your package in real time.
Estimated Delivery Time
Most orders arrive within 3–7 business days of shipping, depending on your location and the item’s warehouse origin. Freight items and oversized packages may take additional time.
Shipping Carriers
We use trusted carriers such as FedEx, UPS, USPS, and professional freight delivery services for large or heavy items. Depending on the size of your order, it may arrive in multiple packages or from multiple warehouses.
Delivery and Moving Disclaimer
Please note: We do not offer moving or installation services. For freight shipments or large items, carriers are only responsible for curbside delivery. Drivers are not required to move items inside your home, up stairs, or to specific locations. We strongly recommend having assistance available at the time of delivery for heavy or bulky shipments.
Address Accuracy & Order Changes
Please ensure your shipping address is correct at the time of checkout. Once an order has shipped, we are unable to change the delivery address or reroute the shipment. If you need to make changes to your order, contact us immediately after placing it.
Damaged or Lost Shipments
If your order arrives damaged or appears to be lost in transit, contact us within 48 hours of delivery (or expected delivery). We will work with the carrier to resolve the issue as quickly as possible.
Shipping Restrictions
We currently ship only to addresses within the continental United States. We do not ship to Alaska, Hawaii, U.S. territories, or international destinations.
Questions?
If you have questions about your order, delivery, or shipping process, feel free to reach out to us through our Contact Us page or via email. We’re here to help.
Start of Returns section
Easy Returns, No Surprises
At Garden GrowShop, we stand behind the quality of every product we carry. But we also understand that sometimes things just don’t work out — and that’s okay. If you change your mind or the item isn’t quite what you expected, we’ve got you covered.
You have 30 days from the date of delivery to request a return for any reason. To start a return, simply email us at sales@gardengrowshop.com with your order number and we’ll walk you through the process.
Here’s what to expect:
You’ll receive clear return instructions from our team.
Once your item is received and inspected, we’ll issue a refund to your original payment method.
Items must be returned in “like new” condition, with all original packaging and accessories.
Return shipping costs are the responsibility of the customer.
“Like new” means no visible wear, damage, or missing parts. Items showing signs of use or misuse may not qualify for a refund.
If your order arrives damaged or defective, don’t worry — we’ll take care of it.
Here’s what to do:
Note any damage with the delivery driver when signing for the package.
Email photos and a description of the issue to sales@gardengrowshop.com on the same day you receive it.
We’ll cover the cost of return shipping and make sure a replacement is sent out quickly.
Please keep all original packaging in case a return is needed. This helps speed up the process and ensures a smooth resolution.
If you need to cancel your order, please contact us as soon as possible at sales@gardengrowshop.com or by phone.
Cancellations before shipment receive a full refund.
Cancellations after shipment will follow our standard return policy and may be subject to return shipping costs.
Certain products may have brand-specific return restrictions, which will be noted on the product page.
Products purchased for temporary or single-use purposes (e.g. trade shows, promotional events) are not eligible for return.
We’re Here to Help
Our goal is to make returns and exchanges as easy as possible — with no stress and no surprises. If you’re unsure whether your order qualifies or just want to ask a question, don’t hesitate to reach out. We’re here to make sure you feel confident before and after your purchase.
We’re an authorized dealer for every brand we sell—so you’ll always get full manufacturer warranties, premium support, and authentic gear direct from the source.
✅ Fast, tracked shipping on all orders
✅ 100% safe and secure checkout
✅ No restocking fees on returns
✅ Friendly U.S.-based support when you need it
Have questions? We're here to help. Whether you're just getting started or scaling up a full grow, our experts can guide you to the right gear.
