Door Sensor & Contact

Door Sensor & Contact for Perimeter Security & Status Monitoring

A door sensor and contact is a specialized magnetic security device engineered to monitor the open or closed status of doors, windows, and gates in real time. Businesses, commercial offices, and industrial facilities deploy these wired and wireless magnetic contact sensors to detect unauthorized entries, secure restricted zones, and trigger perimeter alarms. Upgrading your security setup with a professional Door Sensor & Contact system guarantees continuous environmental awareness and seamless integration with broader intrusion alarm systems. Evaluating the right sensor configuration helps facility managers and corporate buyers balance intrusion detection accuracy with project budgets.

Key Features to Consider

• Wired vs. Wireless Operation: Choose between reliable hardwired magnetic contacts for permanent installations or wireless RF/battery-operated sensors for flexible, cable-free setups.
• Surface-Mounted vs. Recessed: Select surface-mounted contacts for fast installation on standard door frames or discreet recessed sensors drilled directly into wooden and metal doors for hidden aesthetics.
• Operating Gap Distance: Review the magnetic response gap (ranging from 15mm to over 50mm) to ensure stable signal detection even on heavy-duty or industrial doors subject to warping.
• Switch Contact Configuration: Equipped with Normally Open (NO), Normally Closed (NC), or changeover (SPDT) dry contacts for universal compatibility with alarm panels and access controllers.
• Armor & Heavy-Duty Housing: Cast aluminum or rugged ABS plastic housings armored with steel cables, designed to withstand heavy foot traffic, tampering, and harsh industrial environments.
• Overhead Garage & Rolling Door Models: Specialized floor-mounted magnetic contacts engineered to withstand vehicle roll-overs on large warehouse bay doors and motorized gates.

Door Sensor & Contact Price in Bangladesh

Investing in perimeter security requires a clear understanding of market hardware rates. Door sensors and contacts in Bangladesh depend on wired vs. wireless design, gap distance, armored housing material, brand & project scale. Quotations vary based on whether you select standard surface-mounted magnetic contacts, heavy-duty floor-mounted overhead door sensors, or wireless units integrated into your broader Access Control or CCTV Camera system.

Compatible Door Types & Installation Environments

Selecting the appropriate magnetic contact requires matching its physical housing and gap tolerance to your specific doorway construction:

• Wooden & Hollow Metal Doors: Standard surface-mounted or recessed cylindrical magnetic contacts fit neatly into standard frames and doors.
• Frameless Glass Doors: Paired with specialized glass-mounting adhesive brackets or spacer blocks to align the magnet and switch correctly without damaging glass panels.
• Heavy Industrial & Garage Bay Doors: Floor-mounted armored cast-aluminum contacts designed to endure heavy weight and continuous pressure from trucks, forklifts, and large rolling shutters.
• Sliding & Double Doors: Wide-gap specialty contacts accommodate doors with natural structural play or loose tolerances without generating false alarm triggers.

Where Can They Be Used?

• Corporate office buildings and secure executive room perimeter doors
• Commercial retail storefronts, display cases, and entry shutters
• Manufacturing factories, industrial warehouses, and loading bay gates
• Educational institutions, computer server rooms, and campus archives
• Healthcare facilities, hospitals, and restricted pharmaceutical storage zones
• Gated residential communities, building entry points, and apartment lobbies
• Hospitality venues, hotels, and emergency fire exit doors

Why Choose Professional Door Sensors & Contacts?

• Immediate Intrusion Detection: Instantly detects unauthorized forced openings, triggering connected security alarms or notification systems without delay.
• Continuous Status Monitoring: Provides reliable open/closed feedback loops to access control panels, ensuring doors are never left unsecured.
• High Durability & Reliability: Sealed magnetic switches prevent dust, moisture, and environmental corrosion from causing mechanical failure over years of continuous operation.
• Cost-Effective Perimeter Shielding: An economical yet vital layer of defense that secures every potential entry point across a facility.

Explore Door Sensor & Contact Options

Browse our catalog to find perimeter hardware tailored to your building layout. Compare options such as heavy-duty Floor-Mounted Overhead Door Contacts for industrial warehouses or discreet Recessed Magnetic Contacts for clean corporate interiors. Review gap ratings, wiring types, and housing materials before selecting your configuration.

Frequently Asked Questions

What is a door sensor and contact?
A door sensor and contact is an electromagnetic security device consisting of a magnet and a switch that detects whether a door or window is open or closed by monitoring the magnetic field between them.

How much do door sensors and contacts cost in Bangladesh?
Prices depend on whether they are wired or wireless, surface-mounted or armored for heavy industrial rolling doors.

What is the difference between wired and wireless door contacts?
Wired contacts connect physically via low-voltage cables to an alarm panel or access controller, whereas wireless contacts use battery-powered radio frequencies (RF) to transmit status signals wirelessly.

How do magnetic door contacts work?
When the door is closed, the magnet sits close to the switch, holding an internal electrical circuit in a specific state (usually closed); when the door opens, the magnet moves away, breaking the circuit and triggering an alert.

Can door contacts be used on rolling warehouse shutters?
Yes, heavy-duty floor-mounted magnetic contacts housed in rugged cast aluminum cases are built specifically to withstand heavy rolling shutters and vehicle traffic on warehouse loading bays.

Do door sensors trigger alarms when a door is left ajar?
When integrated into advanced access control or security alarm software, they can generate a "Door Open Too Long" (DOOR AJAR) warning if a door remains open past a pre-set time limit.

Read our Access Control Buying Guide or get a Quotation/Contact DigiMark Solution today to discuss your perimeter security requirements.

Why Buy Door Sensor & Contact from DigiMark Solution?

DigiMark Solution is your trusted IT and security solutions partner in Bangladesh, providing 100% genuine, officially warranted products tailored for corporate offices, factories, and institutions. Explore and buy authentic Door Sensor & Contact with full setup assistance. Our certified engineers offer complete site inspection, setup, and reliable after-sales support.

Visit us in Dhaka (Head Office, IDB, Gulshan, Uttara, Elephant Road) or Chattogram.