MS-SF4A-H4

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Accessories

MS-SF4A-H4 is an accessory which is designed for controlling door and window open/closed state in various applications like office security, construction sites safety, housing estate security, bank, hospital, and other commercial buildings. MS-SF4A-H4 uses a 1-channel switch which can be connected to single-leaf door and window sensing devices, as well as 2-/3-/4-channel switch which can be connected to multi-leaf doors and window sensing devices.

Application Field

The application field for MS-SF4A-H4 accessory is wide and varied. It is perfect for office security, door and window sensing devices for buildings, construction sites safety, bank, hospital, and other commercial areas. MS-SF4A-H4 is commonly used with different types of doors and windows, including swing doors, sliding doors, hinged doors, folding doors, and even French doors. It is also suitable for most kinds of window frames such as wooden frames, aluminum frames, metal frames, and other kinds of custom-built frames. It is also used in some large-scale engineering projects, like bridges, tunnels, etc.

Working Principle

MS-SF4A-H4 works by using a signal feedback technology which helps to detect open and close states instantly. It comprises of a detection circuit and a control circuit which can detect the opening and closing of doors and windows accurately. The control circuit uses an integrated voltage regulator which can provide the most reliable and accurate door and window detection signals. The detection circuit uses special sensors to detect the open or close state of doors and windows and then sends corresponding signals to the controller. The controller then sends the signals to the power supply module to control whether power is sent to the door/window.

The MS-SF4A-H4 accessory is designed with dual working modes: PULSE CONTROL and ON/OFF control. In PULSE CONTROL mode, a signal is sent from the controller to the power supply module to trigger the power supply according to the input pulse. In ON/OFF control mode, the control signals are supplied by a separate device, and the power supply is triggered according to the state of the signal. The detection circuit and control circuit are both connected directly to the microcontroller to ensure the accuracy of the signals and avoid malfunctioning.

MS-SF4A-H4 is simple and effective, and it is easy to install and maintain. It is widely used in different industries and applications because of its perfect performance and stability.

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