DH-33 Recessed Wired Door Contact – NC Magnetic Reed Switch Sensor

Normally Closed (NC) Magnetic Contact
Recessed Hidden Installation Design
Reliable Magnetic Reed Switch Technology
Durable ABS Plastic Housing
Designed for Alarm & Security Systems
Suitable for Doors & Windows

Rs.450.00

Price includes tax. Delivery calculated at checkout.

Why our price is lower

We import directly and supply the trade from two shops in Karachi and Lahore. There is no middleman between the container and you. Same product, fewer hands.

In stock, ready to ship

Limited stock

1 year service warranty Void if burnt or physically damaged Claim it at either shop, or send it back — we handle the manufacturer for you. Invoice included with every order.

Will this fit my setup?

Check the voltage your existing wiring or adaptor supplies.
Measure the space, door thickness or bracket spacing before ordering.
Confirm it works with the recorder, panel or app you already use.
Still not sure? Send a photo of the old part, the door or the existing setup. We will tell you what fits - usually within minutes during shop hours.

Free delivery on orders over Rs 5,000
2-3 working days to Karachi, Lahore and Islamabad · 3-5 elsewhere
Cash on delivery available nationwide
Order before 4pm for same-day delivery in Karachi and Lahore · prepaid orders only
Save 4% when you pay by card or bank deposit · use code PREPAID4
Free collection from our Karachi or Lahore shop

Genuine product
7-day returns
Secure checkout
Trading since 2005

Not sure this is the right one? Ask us on WhatsApp - we will tell you straight.

Product details

The DH-33 Recessed Door Contact Sensor (NC) is a wired magnetic sensor designed for alarm and security systems to detect door or window openings.

The sensor works 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 system.

Its recessed design allows installation inside the door or window frame, making the sensor hidden and more secure compared to surface-mount sensors.

The DH-33 sensor is widely used in home security systems, burglar alarms, access control systems, and commercial security installations where reliable intrusion detection is required.