Strong Chain Drive Mechanism Features a robust metal chain transmission structure for smooth and long lasting operate with minimal wear Ideal for repeated push pull and locking functions Weather Resistant Design Built with Erosion resistant materials and Protect for Stable indoor / outdoor use in homes, greenhouses, and commercial buildings Versatile Electric & Power Operates on 24V for stable power output, Suitable for various electrical environments adjustable Travel from 200mm to 1000mm to suit different window sizes Quiet & Efficient Designed for low noise operate, making it suitable for residential and Work Area environments without disturbance Ensures seamless ventilation control Simple setup for or new window applications Perfect for homes, offices, and greenhouses to enhances air with automated ventilation, Manufacturer: sodeber