• Heavy-Duty Metal Housing Design
• Normally Closed (NC) Magnetic Contact
• Long Detection Gap for Rolling Doors
• Durable Zinc Alloy Body
• Surface Mount Easy Installation
• Compatible with Alarm & Security Systems
The DH-58 Rolling Door Magnetic Contact (NC) is a heavy-duty security sensor designed specifically for rolling shutters, garage doors, and industrial gates.
Unlike standard door contacts, this model features a strong metal housing and larger detection gap, making it ideal for environments where larger door movement occurs, such as warehouses, factories, and commercial shutters.
The sensor operates using a magnetic reed switch and magnet pair. When the door is closed, the magnet keeps the circuit closed. When the door opens and the magnet moves away, the circuit opens and sends a signal to the alarm panel.
The zinc alloy metal casing provides durability and resistance against harsh environments, making it suitable for industrial security installations.
Product Type: Rolling Door Magnetic Contact Sensor
Model: DH-58
Contact Type: NC (Normally Closed)
Operating Voltage: Up to 100V DC/AC
Max Switching Current: 0.5A
Max Power Load: 10W
Detection Gap: Approx. 30–50 mm
Material: Zinc Alloy Metal Housing
Connection Type: Wired
Installation Type: Surface Mount
Color: Silver / Metal
Application: Alarm & Security Systems
Rolling Shutter Doors
Garage Doors
Industrial Gates
Warehouses
Factories
Commercial Buildings
Shop Shutters
Security Alarm Installations
Q1: What type of doors is DH-58 used for?
It is designed for rolling shutter doors, garage doors, and industrial gates.
Q2: What does NC mean?
NC means Normally Closed – the circuit stays closed when the magnet is near.
Q3: What is the detection distance?
The operating gap is approximately 30–50 mm depending on installation.
Q4: Is it suitable for industrial environments?
Yes, the metal housing makes it ideal for industrial installations.
Q5: Can it connect to alarm panels?
Yes, it works with most wired alarm and security systems.
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