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• Heavy-Duty Zinc Alloy Metal Housing
• Normally Closed (NC) Magnetic Contact
• Wide Detection Gap (Up to 40mm)
• Designed for Metal & Industrial Doors
• Surface Mount Easy Installation
• Compatible with Alarm & Security Systems
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The DH-56 Metal Door Magnetic Contact is a heavy-duty magnetic sensor designed for security alarm systems to detect door or gate opening.
This sensor uses a magnetic reed switch, an electrical switch activated by a magnetic field, commonly used in security systems to detect movement or door position.
The DH-56 model features a strong zinc alloy metal housing, making it suitable for metal doors, rolling shutters, industrial gates, and warehouse entrances where durability is required.
When the door is closed, the magnet keeps the circuit closed. When the door opens and the magnet moves away, the circuit changes state and triggers the alarm panel.
The DH-56 sensor supports both NO and NC output configurations depending on installation requirements and typically provides a wide operating gap of around 40 mm, making it suitable for large doors or shutters.
You can buy this metal door magnetic contact from ZZ Marts, with stores in Karachi and Lahore and delivery across Pakistan.
Product Type: Magnetic Door Contact Sensor
Model: DH-56
Contact Type: NC (Normally Closed) / NO (Optional)
Operating Voltage: Up to 100V DC
Max Switching Current: 0.5A
Max Power Load: 10W
Detection Gap: Up to 40 mm
Material: Zinc Alloy Metal Housing
Connection Type: Wired
Installation Type: Surface Mount
Color: Grey / Metal
Application: Alarm & Security Systems
Rolling Shutter Doors
Industrial Gates
Warehouse Doors
Garage Doors
Commercial Buildings
Factory Entrances
Shop Shutters
Security Alarm Installations
Q1: What type of doors is DH-56 used for?
It is ideal for metal doors, rolling shutters, and industrial gates.
Q2: What is the detection distance?
The operating gap can reach up to 40 mm depending on installation.
Q3: Is it compatible with alarm panels?
Yes, it works with most wired security alarm systems.
Q4: Why does it have a metal body?
The zinc alloy housing increases durability for industrial environments.
Q5: Can it be used outdoors?
Yes, it can be used in indoor or protected outdoor installations.
| TYPE | NC, NO |
|---|
Accurate PIR Motion Detection – Detects human movement with high sensitivity
Real-Time App Alerts – Instant motion notifications on your smartphone
Tuya Smart / Smart Life App – Full remote monitoring and automation
Wide Detection Angle – Covers large areas for better security
Battery Powered – Low power consumption for long-lasting use
Compact Ceiling / Wall Mount Design – Clean look for modern interiors
Wireless RF Control: Operate devices remotely using RF remote controls
2-Button Remote Included: Easy ON / OFF control (A & B buttons)
Compact Relay Module: Fits easily inside electrical boxes and enclosures
Stable Signal Reception: Reliable RF communication with strong anti-interference
Wide Voltage Compatibility: Works with multiple low-voltage control applications
Easy Wiring Terminal: Screw terminals for quick and secure installation
Available in NC & NO Versions: Choose Normally Closed or Normally Open based on your alarm wiring requirements.
Magnetic Reed Switch Detection: Accurate open/close sensing for doors, cabinets, shutters, etc.
Stable Wired Communication: Prevents wireless interference for critical security applications.
Durable ABS Casing: Moisture-resistant housing ensures long-term reliability.
Compact Surface / Flush Mount: Discreet design blends with door frames.
Compatible With Alarm & Access Systems: Works with panels, controllers, relays, and automation modules.
High Sensitivity Detection: Accurately detects metal objects of all sizes.
Handheld Portable Design: Lightweight and easy to carry for long operations.
Instant Audio & Vibration Alert: Clear indication when metal is detected.
Wide Scanning Coverage: Detects from multiple angles with fast response.
Low Power Consumption: Long working time on battery.
Rugged ABS Body: Durable build for professional security use.
Two Variants Available:
– NC magnetic reed switch
– NO/NC 3-wire universal contact
Heavy-Duty Metal Housing: Designed for industrial and commercial security applications.
Strong Magnetic Trigger Distance: Reliable detection even on large or heavy doors.
Secure Wired Communication: Ensures stable alarm signal with zero wireless interference.
Mounts to Metal Surfaces: Ideal for metal doors, shutters, gates, and industrial access points.
Works With Alarm & Access Systems: Compatible with panels, maglocks, relays, and controllers.
15 Meter Detection Range: Covers long distances for perimeter and entry protection.
Dual Beam Infrared Technology: Reduces false alarms and improves detection accuracy.
Fast Response Time: Instantly triggers alarm when beam is interrupted.
NC/NO Relay Output: Compatible with alarm panels, access control, and automation systems.
Outdoor & Indoor Use: Weather-resistant design for reliable outdoor installation.
Easy Alignment & Installation: Adjustable mounting for precise beam setup.

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