The ‘Power Switch (for 840 Ventilator) – 4-075187-00’ is a vital component designed specifically for the 840 Ventilator. This product is essential for the proper functioning of the ventilator, allowing users to easily turn the device on and off. It is built to meet high-quality standards and is available for shipping within the Continental US only. Please note that this product is not suitable for use with other models or brands of ventilators.