G-Systems controllers for ventilation and climate

GSE temperature and minimum speed controller with 5A outlet is a speed controller for one or more exhaust fans used in indoor growing rooms.

• maintains a constant room temperature
• provides a continuous minimum speed to maintain basic air exchange
• max. current: 5.0A
• max. load: 1150W

Settings range:

• temperature: 20C° to 30C°
• min. speed: off, 20% to 100%

Technical specifications:

• dimensions W x H x D: 75x110x90mm.
• max. current: 5.0A
• max. load: 1150W
• temperature sensor with 2 m cable
• voltage: 230V, 50Hz

Installation:

• Plug the air fan into the outlet (5). Connect the temperature sensor (7), which has a 2 m cable, to the controller and choose a location for the sensor where you want to take the measurement.
• Make sure it is not directly exposed to a heat source or light, to ensure the most accurate measurement of the ambient air. Now plug the controller's plug (6) into an external outlet. The controller initializes, which can take up to 10 seconds; the green power LED (3) flashes, and the fans run at 50% power. After initialization, the green power LED (3) stays on continuously - the controller regulates from this point on.

Instructions:

1. Use the temperature setting button (1) to set the desired temperature, for example, 24°C.
2. Use the second knob to set the minimum speed (2), which should never drop during regulation; for example, we set it to 20%.
3. The minimum speed setting is the most powerful setting and always overrides the temperature setting. If you set the minimum speed setting (2) to OFF, the fan will stop running when the measured temperature is below the set temperature. The minimum speed setting (2) has a 20% startup peak to provide enough power for the fan to run at low speed.
4. The hysteresis is a fixed value of 2°C. Hysteresis is the controlled range of the fan speed. Within these 2°C, the fan speed will change from the lowest point, set by the minimum speed setting (2), to the highest control point, 100% fan speed, depending on the temperature.
5. While the temperature measured by sensor (7) is below your setting (24°C), the minimum speed regulator keeps the fan running at the minimum speed setting (20%). As the temperature rises above 24°C, the temperature LED (4) turns on and the fan speed starts to increase based on the temperature over the next 2°C, up to 100% when it reaches 26°C.
6. Small fans can be adjusted from 0-100%, but with higher power consumption (large fans), the controller operates in semi-variable mode and will automatically switch to 100%, without variable control. The controller stays on until the temperature drops.
7. Warning! Setting a high minimum speed with large fans will cause them to run at 100% due to internal overheating protection! Lower the minimum speed!

Choosing a climate controller

Match the load type and control method. An AC fan with adjustable voltage and an EC fan with a signal input require different controls. Follow the limitations of the specific model.

Browse ventilation and climate controllers.

GSE Temperature and Minimum Speed Controller 10A is a speed controller for one or more exhaust fans used in indoor grow rooms.

• maintains a constant room temperature
• provides a continuous minimum speed to maintain baseline air exchange
• max. current: 10.0A
• max. load: 2300W

Setting range:

• temperature: 20C° to 30C°
• min. speed: off, 20% to 100%

Technical specifications:

• dimensions W x H x D: 130x92x105mm.
• max. current: 10.0A
• max. load: 2300W
• temperature sensor with 4m. cable
• voltage: 230V, 50Hz

Instructions:

1. Use the temperature setting knob to set the desired temperature, for example 24°C.
2. Use the second knob to set the minimum speed, which should never drop during regulation; for example, we set this to 20%.
3. The minimum speed setting is the strongest setting and always overrides the temperature setting. If you set the minimum speed setting to OFF, the fan will stop running when the measured temperature is below the set temperature. The minimum speed setting has a 20% startup boost to provide enough power for the fan to run at low speed.
4. The hysteresis is a fixed value of 2°C. Hysteresis is the controlled range of fan speed. Within these 2°C, the fan speed changes from the lowest point, set by the minimum speed setting, to the highest control point, 100% fan speed, depending on the temperature.
5. As long as the temperature measured by the sensor is below your setting (24°C), the minimum speed regulator keeps the fan running at the minimum speed setting (20%). When the temperature rises above 24°C, the temperature LED turns on and the fan speed starts increasing based on the temperature over the next 2°C, up to 100% at 26°C.
6. Small fans can be adjusted from 0-100%, but with higher power consumption (large fans), the controller operates in semi-variable mode and automatically switches to 100% without variable control. The controller remains on until the temperature drops.
7. Warning! Setting a high minimum speed with large fans will cause it to run at 100% due to the internal overheating protection! Reduce the minimum speed!

Choosing a climate controller

Match the load type and control method. An AC fan with adjustable voltage and an EC fan with a signal input require different control methods. Follow the limits specified for the specific model.

Browse ventilation and climate controllers.

Digital ventilation controller

• 2 phase-controlled fan outputs – intake and exhaust
• 2 additional programmable outputs, configurable as timers or linked to sensor readings
• LCD screen
• 1 combined air sensor for temperature, humidity and light
• 1 waterproof temperature sensor
• Robust aluminium enclosure
• Up to 2200W load per output or 3600W total
• Numerous options for day/night settings
• Depending on version: USB port for saving data to a flash drive (CSV format)
• Free slot for a negative-pressure sensor
• 2 m power cable
• 4 m sensor cables, extendable to 10 m
• Digital display and 4 buttons
• Indicator lights for output activation


Technical data:
dimensions: 150 x 210 x 110 mm
power supply: 230V / 50Hz
max. power: 16A / 3600W
temperature and humidity sensor: 5V; -55°C ... +125°C; accuracy 0.5°C / ±4.5% RH
waterproof sensor: 5V, -55°C ... +125°C; accuracy 0.5°C
protection rating: IP54

GSE NexControl 32A AC/EC is a professional controller for automated climate control in grow rooms. It combines control of CO₂, temperature, humidity, ventilation, and lighting in one device, allowing precise maintenance of the set conditions throughout the day and night.

The controller can control AC fans via adjustable outputs, EC fans via a 0–10 V or PWM signal, and lighting via 0–10 V dimming. The four programmable outputs can be configured to respond to sensor readings or a timer to control heating, cooling, humidification, dehumidification, a CO₂ solenoid valve, and other connected devices.

Main features

• CO₂ concentration control with a setpoint and hysteresis
• Temperature and humidity control with separate day and night settings
• Controls intake and exhaust fans
• Supports AC and EC fans
• Control signals for EC fans: 0–10 V or PWM
• Lighting control and dimming via 0–10 V
• Programmable lighting schedule with sunrise and sunset simulation
• 4 programmable outputs for climate control and auxiliary devices
• Temperature, humidity, and CO₂ alarms
• Stores minimum and maximum measured values

Technical specifications

Dimensions

• Housing: 120 × 180 × 80 mm
• Controller: 150 × 210 × 110 mm

Sensors and control

This configuration includes a sensor for CO₂, temperature, humidity, and light. The controller monitors current readings and lets you set target parameters, alarms, and automatic responses from connected devices.

Installation

The device must be installed using the supplied mounting bracket on a solid, non-combustible surface and in a location with sufficient ventilation to dissipate heat. Installation in enclosed cabinets or spaces with limited air circulation is not recommended.

Step-down transformer that lets you control fans without the low-frequency noise at low speed.

The six control settings help you better control the exhaust fan according to the temperature and humidity settings you have selected.

The four buttons let you set the temperature, temperature hysteresis, humidity and humidity hysteresis.
Using the built-in jumper - J1 (in the box), you can choose whether the fan continues running at minimum speed or stops when the desired temperature and humidity are reached. When J1 is closed, ventilation continues at minimum speed. When it is open, the fan stops completely.

It comes with a 4m cable with a temperature and humidity sensor, an exhaust fan outlet and a waterproof enclosure.

- temperature range: 20C° - 30C°
- temperature hysteresis: 2C°-8C°
- humidity range: 30% - 100%
- humidity hysteresis: 6%-30%
- dimensions: 265mm х 300mm х 205mm
- maximum current: 2,5 A
- Voltage: 230V / 50HZ
- Digital sensor 5V measures temperatures from –55°C to +125°C (–67°F to +257°F)
- Accuracy: 0,5C° in the range from -10C° to +85C°; ±4,5%rh
- Protection rating: IP54
 

Choosing a climate controller

Consider the load type and control method. An AC fan with adjustable voltage and an EC fan with a signal input require different controls. Follow the limitations of the specific model.

Browse ventilation and climate controllers.

The controller maintains the set temperature and prevents operation below the specified minimum speed or above the permitted maximum speed.

Choosing a climate controller

Consider the load type and control method. An AC fan with adjustable voltage and an EC fan with a control input require different controls. Follow the limitations of the specific model.

Browse ventilation and climate controllers.

A step-down transformer that lets you control fans without low-frequency noise at low speeds.

The six control steps help you better regulate the exhaust fan according to the temperature setting you have chosen.

Two buttons let you set the temperature and temperature hysteresis.
Using the built-in jumper - J1 (in the box), you can choose whether the fan continues running at minimum speed or stops when the desired temperature is reached. When J1 is closed, ventilation continues at minimum speed. When it is open, the fan stops completely.

It comes with a 4 m cable with a temperature and humidity sensor, an exhaust fan socket, and a waterproof enclosure.

- temperature range: 20C° - 30C°
- temperature hysteresis: 2C°-8C°
- dimensions: 265mm х 300mm х 205mm
- maximum current: 2,5 A
- Voltage: 230V / 50HZ
- Digital sensor 5V measures temperatures from –55°C to +125°C (–67°F to +257°F)
- Accuracy: 0,5C° in the range from -10C° to +85C°; ±4,5%rh
- Protection rating: IP54

Choosing a climate controller

Consider the load type and control method. An AC fan with adjustable voltage and an EC fan with a signal input require different control systems. Follow the specifications of the specific model.

Browse ventilation and climate controllers.

• voltage: 230V / 50Hz
• switching interval: 15 min
• power reserve: no
• manual switching: On - Automatic - Off

Technical data: 

• Imax: 16 A
• Umax: 230 V
• VAmax: 3600 W

Before replacement

Check the model, mounting dimensions, electrical ratings, and wiring diagram. Replace only with a compatible board, with the power disconnected.

Browse lighting timers and boards.