Delivering Confidence You Can Grow With!
Link4 Helps growers thrive with smart, cloud-connected greenhouse and grow room controls. Monitor, manage, and protect your crops from anywhere with instant text alerts and alarms.
Pearl Digital Controller Module
The Optimal Solution for a Smart, Climate-Controlled Greenhouse
Revolutionize your operations with Link4’s 4th-generation cloud-connected system, tailored for commercial growers to effortlessly enhance yield and crop quality.
Main Features:
Main Features:
- Unmatched Scalability: Expand with additional modules to handle up to 128 inputs and outputs.
- Seamless Connectivity: Ethernet access for uninterrupted cloud integration.
- Robust Design: Surge-protected power for uninterrupted operation.
- Effortless Maintenance: Quick-change communication keys
- User-Friendly: Bright sunlight-readable display & USB for backup
- 128 Inputs and outputs (expandable)
- Ethernet and LBus for cloud integration
- Bright, sunlight-readable LCD screen
- Isolated power and surge protection
- Modbus RTU ports
Custom Integrated Contractor Panels
Unlock your greenhouse’s potential with Link4’s UL508A-certified Contactor Panels.
Pre-mounted with Pearl environmental controllers, they streamline setup by eliminating the need for extra enclosures.
Main Features:
Main Features:
- Enjoy seamless integration with the Pearl controller, relay module, and contactors for full automation.
- Easily accommodate single-phase and 3-phase motors with high-amperage contactors.
- Stay connected with remote access and alerts via Link4 Cloud (subscription required).
- Trust UL508A certification for secure high-voltage installations.
- Protect your investment with a durable NEMA 4 enclosure for wet conditions.
- Controller: Pearl advanced environmental controller
- Outputs: 8-relay output module for flexible device control
- Contactors: (3) 3-pole 18A contactors for high-power motors
- Sensors: Integrated temperature & humidity sensor (I2C version)
- Connectivity: Ethernet for Link4 Cloud remote access & alarms
- Enclosure: White metallic NEMA 4 for wet/humid installations
- Certification: UL508A- approved for safe, high-voltage operation
Pearl Standalone Controller
The Pearl Standalone Controller is a robust solution engineered for seamless integration and ultimate control.
Main Features:
- Plug & Play Installation: Includes a wall power plug for fast and simple setup
- Integrated Sensor Included: Digital temperature and humidity sensor via I2C
- 8 Pilot Relay Outputs: Control multiple devices with low-voltage pilot relays
- Weather-Resistant Enclosure: IP65-rated with front access window
- Retrofit Ready: An excellent upgrade for older control system
Specifications:
- Power supply: 24VDC
- Enclosure: IP65 weather-resistant
- Ethernet, USB, Wi-Fi, 4G* (*check for availability)
- Requirements: Internet, cloud connectivity, cloud subscription, and a power outlet 5 isolated Modbus RTU ports
- Supply Voltage 2.4-5.5V
- Communication I2C, up to 1 MHz, 2 selectable addresses
- Temperature accuracy ±0.3 °C
- Humidity accuracy ±2% RH
- Humidity Range 0-100% RH
- Temperature Range -40 – 125°C
- Package 8-Pin DFN, 2.5 x 2.5 x 0.9mm
- Current Consumption 2 µA avg, 800 µA measuring
- Response Time RH: 86 s, Temp: >2 s
iDrive Motor Controller
Link4 iDrive Motor Controllers deliver smart, reliable motor control for natural ventilation in commercial grow environments.
Main Features:
- Automates ridge, sidewall, and curtain vents
- Compatible with 24VDC, 120VAC, and 240VAC motors
- Manual, automatic, or thermostat-controlled operation modes
- Mounts easily in tight greenhouse spaces
- Manual override & motor-reverse delay
- UL/cUL approved and built to industry standards
- Integrates with Link4’s iGrow and Pearl controllers
Specifications:
- Motor types: 24VDC, 120VAC, 240VAc
- Modes: Manual, Timed, Sensor-Based
- Safety: Current sensing overload protection
- Installation: DIN rail or wall mount options
- NEMA 4 Cabinet
- Available as single or dual drives
- Phase: Single or three-phase capable
- Wires: 3 or 5 wire motors
Learn more about our partner on their website: Link4 Corporation
Delivering Confidence You Can Grow With!
Link4 Helps growers thrive with smart, cloud-connected greenhouse and grow room controls. Monitor, manage, and protect your crops from anywhere with instant text alerts and alarms.
Pearl Digital Controller Module
The Optimal Solution for a Smart, Climate-Controlled Greenhouse
Revolutionize your operations with Link4’s 4th-generation cloud-connected system, tailored for commercial growers to effortlessly enhance yield and crop quality.
Main Features:
Main Features:
- Unmatched Scalability: Expand with additional modules to handle up to 128 inputs and outputs.
- Seamless Connectivity: Ethernet access for uninterrupted cloud integration.
- Robust Design: Surge-protected power for uninterrupted operation.
- Effortless Maintenance: Quick-change communication keys
- User-Friendly: Bright sunlight-readable display & USB for backup
- 128 Inputs and outputs (expandable)
- Ethernet and LBus for cloud integration
- Bright, sunlight-readable LCD screen
- Isolated power and surge protection
- Modbus RTU ports
Custom Integrated Contractor Panels
Unlock your greenhouse’s potential with Link4’s UL508A-certified Contactor Panels.
Pre-mounted with Pearl environmental controllers, they streamline setup by eliminating the need for extra enclosures.
Main Features:
Main Features:
- Enjoy seamless integration with the Pearl controller, relay module, and contactors for full automation.
- Easily accommodate single-phase and 3-phase motors with high-amperage contactors.
- Stay connected with remote access and alerts via Link4 Cloud (subscription required).
- Trust UL508A certification for secure high-voltage installations.
- Protect your investment with a durable NEMA 4 enclosure for wet conditions.
- Controller: Pearl advanced environmental controller
- Outputs: 8-relay output module for flexible device control
- Contactors: (3) 3-pole 18A contactors for high-power motors
- Sensors: Integrated temperature & humidity sensor (I2C version)
- Connectivity: Ethernet for Link4 Cloud remote access & alarms
- Enclosure: White metallic NEMA 4 for wet/humid installations
- Certification: UL508A- approved for safe, high-voltage operation
Pearl Standalone Controller
The Pearl Standalone Controller is a robust solution engineered for seamless integration and ultimate control.
Main Features:
- Plug & Play Installation: Includes a wall power plug for fast and simple setup
- Integrated Sensor Included: Digital temperature and humidity sensor via I2C
- 8 Pilot Relay Outputs: Control multiple devices with low-voltage pilot relays
- Weather-Resistant Enclosure: IP65-rated with front access window
- Retrofit Ready: An excellent upgrade for older control system
Specifications:
- Power supply: 24VDC
- Enclosure: IP65 weather-resistant
- Ethernet, USB, Wi-Fi, 4G* (*check for availability)
- Requirements: Internet, cloud connectivity, cloud subscription, and a power outlet 5 isolated Modbus RTU ports
- Supply Voltage 2.4-5.5V
- Communication I2C, up to 1 MHz, 2 selectable addresses
- Temperature accuracy ±0.3 °C
- Humidity accuracy ±2% RH
- Humidity Range 0-100% RH
- Temperature Range -40 – 125°C
- Package 8-Pin DFN, 2.5 x 2.5 x 0.9mm
- Current Consumption 2 µA avg, 800 µA measuring
- Response Time RH: 86 s, Temp: >2 s
iDrive Motor Controller
Link4 iDrive Motor Controllers deliver smart, reliable motor control for natural ventilation in commercial grow environments.
Main Features:
- Automates ridge, sidewall, and curtain vents
- Compatible with 24VDC, 120VAC, and 240VAC motors
- Manual, automatic, or thermostat-controlled operation modes
- Mounts easily in tight greenhouse spaces
- Manual override & motor-reverse delay
- UL/cUL approved and built to industry standards
- Integrates with Link4’s iGrow and Pearl controllers
Specifications:
- Motor types: 24VDC, 120VAC, 240VAc
- Modes: Manual, Timed, Sensor-Based
- Safety: Current sensing overload protection
- Installation: DIN rail or wall mount options
- NEMA 4 Cabinet
- Available as single or dual drives
- Phase: Single or three-phase capable
- Wires: 3 or 5 wire motors






















