SF4-AH28-H

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Optical sensors are used in a wide variety of applications, from simple light switches to full-blown automated home systems. And within optical sensors, photointerrupters are becoming increasingly popular as they offer greater flexibility, accuracy and ease of use. The SF4-AH28-H slot type logic output photointerrupter is a prime example of this trend.

The SF4-AH28-H is an infrared transmitter-receiver optical photointerrupter. It consists of a pair of infrared transmitting and receiving elements isolated from each other, housed in a reflective plastic case which forms a slot. When an object passes through the slot, such as a lever or flap, its motion is detected by the photointerrupter, causing it to output a high or low logic signal.

The photointerrupter’s modular design and small size makes it ideal for applications that require a relatively small but powerful optical sensor. It can be used as a proximity sensor in robotic arms and motorized gates; as part of a sensing system in factory automation; and as a position or motion detector in machine tools.

The SF4-AH28-H comes in several different sizes, depending on the application. The smallest version is the 3x2mm package, which is small enough to fit into a tight space, and the largest is the 6x4mm package, which has a longer sensing range. The sensor also offers a wide range of adjustable sensitivity settings, allowing it to be tuned to the requirements of the application.

The working principle of the SF4-AH28-H photointerrupter is quite simple. When an object passes through the slot, it interrupts the light emitted by the infrared transmitter, causing the detected light level to drop. This is then detected by the receiver, triggering an electrical signal to be output. This signal can be used to activate other devices, such as relays or motors, to carry out various tasks.

In addition to its versatile size and sensitivity settings, the SF4-AH28-H photointerrupter also offers a number of unique features. It has an adjustable power supply voltage, and can operate from 3.3V to 24V. It also has a built-in current limiting feature to protect the device from over-current situations. Lastly, the SF4-AH28-H is RoHS compliant, making it suitable for use in environmentally sensitive applications.

The SF4-AH28-H slot type logic output photointerrupter is a highly versatile and reliable optical sensor, offering a range of features and adjustable settings that make it ideal for a variety of applications. Its small size, wide power range and RoHS compliance make it a popular choice for industrial, commercial and home automation projects.

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