Hikvision DS-K4H250S Single-Door Magnetic Lock 300kg Holding Force

The Hikvision DS-K4H250S is a Pro Series single-door electromagnetic lock rated at 300 kg (661 lb) of static linear thrust. It mounts across the top of a single-leaf door, holds the leaf against an armature plate with electromagnetic force while powered, and releases the moment the current is interrupted by a reader, exit button or fire alarm interface. With a 3 A dry-contact signal output and red/green status LEDs built in, it tells your access control system what the door is actually doing instead of leaving it to guess. For Egyptian offices, clinics and compound facilities, it is the standard, reliable choice for a controlled single door. Order the DS-K4H250S today from Speed4Trading with genuine Hikvision stock, official warranty and fast delivery across Egypt.

Why Buy the Hikvision DS-K4H250S?

A magnetic lock has one great advantage over mechanical locking: there is nothing to wear out and nothing to jam. No latch, no bolt, no moving part in the door path — just an electromagnet and a steel plate, which is why mag locks remain the default on doors that are used hundreds of times a day. Because the lock releases when power is removed, it also behaves correctly in an emergency: tie it to the fire alarm and the door frees itself. The DS-K4H250S adds the details that matter in practice — a 300 kg hold that resists a determined shoulder, selectable 12 or 24 VDC so it fits whatever supply is on site, and a signal output plus LEDs so door-forced and door-held alarms actually work.

Key Features & Benefits

• 300 kg (661 lb) of static linear thrust — enough holding force for a main office or corridor door.
• No moving parts in the locking path, so there is nothing to jam, bind or wear out on a high-traffic door.
• Releases instantly when power is interrupted, which is the correct behaviour for an escape route tied to a fire alarm.
• Selectable 12 VDC or 24 VDC operation, so it works with almost any access control power supply already on site.
• Dry-contact signal output rated to 3 A reports the real lock state to your controller for door-forced and held-open alarms.
• Built-in LEDs — green for locked, red for unlocked — make commissioning and fault-finding quick.
• Aluminium alloy shell with zinc-electroplated lock body and armature plate stands up to humidity and coastal air.
• Suits wooden, glass, metal and fireproof doors with a 90° opening angle.

Technical Specifications

• Lock type: single-door electromagnetic (magnetic) lock, Pro Series
• Holding force: 300 kg (661 lb) static linear thrust
• Input voltage: 12 VDC (default) or 24 VDC, selectable
• Current draw: 500 mA at 12 VDC; 250 mA at 24 VDC
• Lock body dimensions: 240 × 49 × 25.5 mm
• Armature plate dimensions: 180 × 38 × 11 mm
• Weight: 2.1 kg
• Shell material: aluminium alloy
• Lock body and armature plate: zinc, electroplated
• Signal output: dry contact (NO / NC / COM), rated up to 3 A — NO while locked, NC while unlocked
• Status indication: green LED locked, red LED unlocked
• Suitable door types: wooden, glass, metal, fireproof; 90° opening angle
• Operating temperature: -10 °C to +55 °C
• Operating humidity: 0 to 95%

Perfect For

Office main and departmental doors, clinic and laboratory corridors, apartment building lobby doors, compound gym and facility rooms, school staff and admin corridors, pharmacy and shop back doors, hotel service doors, and server or store rooms where a single-leaf door needs to be held reliably and released the instant the alarm sounds.

Easy Installation & Compatibility

The lock body is surface mounted to the door frame at the top of the opening and the armature plate is fixed to the door leaf, so nothing is cut into the door and the lock can be fitted to an existing doorway in an hour. L and Z brackets are used for glass or inward-opening doors. Wiring is simple: 12 or 24 VDC from your access control power supply, with the negative switched by the lock output of a reader or controller — a Hikvision terminal such as the DS-K1T8003MF, DS-K1T8005MFWX-B or DS-K1T807MBFWX-QRE1 drives it directly. The dry-contact output goes back to the controller's door contact input so the system reports the genuine lock state, and the same circuit should be interrupted by the fire alarm relay so the door releases in an emergency.

What's in the Box

• DS-K4H250S magnetic lock body
• Armature plate with rubber washer and fixings
• Mounting screw and bolt pack, with Allen key
• Installation guide

Buy with Confidence from Speed4Trading in Egypt

Speed4Trading is an authorised Hikvision distributor in Mokattam, Cairo, and we sell magnetic locks to installers who come back — which means we would rather tell you the 300 kg model is more than enough than sell you a bigger one. Nationwide delivery, genuine stock, and a technical team that answers the phone.

Genuine Hikvision Quality & Warranty

100% authentic Hikvision product with official Hikvision warranty — verify the brand on the official Hikvision website. See the double-door version and the rest of the range in electric locks & door hardware, and the readers that control it in fingerprint & time attendance terminals.

Frequently Asked Questions

Is 300 kg enough holding force for an office door?
Yes. 300 kg of static linear thrust is the usual specification for single-leaf interior and lobby doors; heavier ratings are normally reserved for high-security or very large doors.

Does the door open if the power goes off?
Yes. An electromagnetic lock holds only while it is powered, so cutting the current — by exit button, controller or fire alarm — releases the door.

Can I fit it to a glass door?
Yes. The lock supports wooden, glass, metal and fireproof doors; glass and inward-opening doors need the appropriate L or Z bracket, which we can supply.

What power supply should I use?
Either 12 VDC or 24 VDC. It draws 500 mA at 12 V and 250 mA at 24 V, so size the supply to cover the lock plus the reader.

Best Price for the Hikvision DS-K4H250S in Egypt

Get the DS-K4H250S for just 2,897 EGP with genuine Hikvision warranty and fast delivery nationwide. Order now from Speed4Trading, or contact our team for help choosing the right solution.