GEZE THZ N4 Electric Window Control Unit

GEZE THZ N4 Staircase Control Panel for Smoke and Heat Extraction

The GEZE THZ N4 is a single zone electric window control unit designed to operate 24V DC actuators in natural ventilation and smoke and heat extraction systems. Ideal for staircases and escape routes, this control module ensures smoke can be vented efficiently in an emergency while also supporting day-to-day comfort ventilation.

Key Product Features:

• MPN: 190775
• Controls 24V DC window actuators
• Suitable for smoke and heat extraction or natural ventilation systems
• Operating voltage: 230V AC
• Output voltage: 24V DC
• Maximum power consumption: 120W
• Maximum output current: 4.5A
• IP30 rated
• Connection cross section/mains: 1.5mm²
• Motor cable wire size: 4mm²
• Rechargeable battery included
• Battery capacity: 2.3Ah
• Alarm group: 1
• Vent group: 1
• Residual ripple: 2%
• Operating temperature: -5°C to 40°C
• Conforms to EN 12101-10 and ISO 21927-9
• Approval: VdS
• Networking of several control units: forwarding of alarm and reset signals for linking up to 10 control units
• Signal outputs: 3 status contacts with settable parameters
• Settable parameters: 5 LEDs
• Finish: White RAL 9016
• Plastic housing
• Dimensions: 193mm x 285mm x 89mm

Designed for Single Zone Stairwell Ventilation

The THZ N4 is designed to support systems with a single smoke compartment. It is housed in a durable white plastic enclosure and is typically installed out of sight in risers, plant rooms, or service cupboards. This helps to preserve the building’s aesthetics. 

It’s ideally suited for smaller installations where automatic smoke extraction is required in the event of a fire, and manual or automatic ventilation is used to support day to day airflow and temperature control.

If you require a smoke and heat extraction system control panel with user facing controls, such as an integrated vent button, consider the GEZE THZ Comfort N4. 

System Integration and Control Options

The unit includes inputs for smoke detectors, manual call points such as the GEZE FT4, fire alarm interfaces, vent switches, and weather sensors. The THZ N4 can be connected to one or more window actuators, with a combined load up to 4.5A.

The THZ N4 is equipped with a built-in 2.3Ah battery, ensuring functionality during temporary power outages. The unit includes three signal outputs with configurable status parameters and five LED indicators for clear system feedback.

Supporting Products for a Complete System

The THZ N4 is part of the GEZE range of electric window actuators and accessories, which also includes:

• GEZE E 250 NT for certified roof window SHEV control
• GEZE Powerchain for larger or heavier windows
• 24V vent switch for user control, such as the LTA-24-AZ
• 24V power supply modules

Explore our window actuator selection or contact our team for guidance.