Swann 351-KCG Door & Window Intruder Alarm

Code: N03JX

  • Easy setup battery operated – no wiring
  • Magnetic break contact alarm
  • Loud 110+ dB siren built in

Product details

Swann 351-KCG Door & Window Intruder Alarm

• Easy setup battery operated – no wiring
• Magnetic break contact alarm
• Loud 110+ dB siren built in
• Programmable 4 digit security code

Special features
• Includes chime mode for visitors

Easy to Setup and Ready to Go
The Swann 351-KCG Door & Window Intruder Alarm is a standalone magnetic break contact alarm with built in siren. The Swann 351-KCG Door & Window Intruder Alarm has a programmable 4 digit security PIN to deactivate the alarm and an entrance and exit delay to give you the time to arm and disarm it. No wiring needed, the Swann 351-KCG Door & Window Intruder Alarm is battery operated (batteries not included Order Code L42AL) and features a low battery indicator to remind you to change the batteries. The door and window alarm also has a chine mode to let you know when your doors opens when you are in as well.

How do I get the most out of my alarm?
The Swann 351-KCG Door & Window Intruder Alarm should be place on any main points of access in and around the home. Good areas to fit the alarm are, for example, front and back doors, ground floor windows and accessible window or external door where the keypad is accessible within the alarms delay period. Swann 351-KCG Door & Window Intruder Alarm only activates when the magnetic contact and detector are separated making this an ideal sensor for homes with pets or as an overnight zone instead of a standard PIR sensor.

Power Source
Mains No
Battery Yes
Mains and battery backup No
Low battery indicator Yes
Wireless No
Frequency N/A
Wired No
Cable length N/A
Phone landline No
Smartphone enabled No
GSM enabled No
RFID tags No
PIR movement No
Door / Window Yes
Panic button No
Key fob remote No
Remote Control No
Fire detector No
Gas detector No
Monitoring and alerts
Remote Controlled via smartphone app No
Manually controlled via control box in the home Yes
Remote controlled via key fob remote No
Push notification alert No
Siren Yes
Siren alert 110+ dB
Siren duration 30 s
Operating range
Maximum operating range N/A
Transmission frequency N/A
Operating systems and protocols
Android N/A
Expandable No
Operating power DC 1.5 AAA battery x 3
Dimensions 105 mm x 67 mm x 27 mm
Weight 131 g
Outdoor Rated No
Battery type(s):
for control unit 3 x AAA Alkaline Batteries
for sensors and accessories N/A
Test mode button No
Package Contents
Magnetic Keypad Door Alarm
Mounting Bracket
Mounting Hardware
Operating Instructions

how to reset code

Asked by: bustergut
This service is for frequently asked questions and does not allow two way communication, In order for us to best assist you with your technical issue please contact us on the details below: 0333 400 9500 or email technical@maplin.co.uk
Answered by: Billy
Date published: 2016-09-22

If mounting for an external garage side access door, would you mount this on the inside of garage or outside? Does it 'beep' if magnet broken? I.e to warn off a burglar without entering fully. Will it keep sounding until pin entered and reset?

Asked by: User1985
The items are for indoor use only. The item has two modes that can be set alarm or Chime Mode.
Answered by: Dominic
Date published: 2016-04-13

Is this intruder alarm a one piece unit? And will at fix to door By screws or pad? Thank you .

Asked by: Reggie
Yes this is a single piece item and is mounted by screws.
Answered by: Billy
Date published: 2016-06-27

how do you set it

Asked by: camera
The device is set and unset using a 4 digit pass code. The pass code is set by the user during initial configuration.
Answered by: Les
Date published: 2015-07-17

How much door has to be open for activation?
Asked by: Anonymous
It would appear that the device has a tolerance of approx 8-10mm … if the contact moves any further away than then, then the alarm would sound
Answered by: Les
Date published: 2015-07-17

How is it attached the the door? Magnet screws ?
Asked by: Anonymous
The main unit would be mounted next to the door, the small magnetic actuator goes on the door next to it, when the door is opened the alarm unit senses the magnet is no longer there and sounds the alarm. both devices mount using standard screws
Answered by: Les
Date published: 2015-07-17

What is the entry/exit delay, and is it configurable?
Asked by: Anonymous
Siren Duration 30s // Entry Delay 30s // Exit Delay 45s // Re-Trigger Delay 5s
Answered by: Les
Date published: 2015-07-17

What material is it made from?
Asked by: Anonymous
These are made from white ABS. RW
Answered by: RW
Date published: 2015-07-17
  • y_2017, m_6, d_26, h_23CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_8
  • loc_en_GB, sid_N03JX, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_maplin-en_gb

Bulk Prices

Item code Item name Quantity Price
N03JX Swann 351-KCG Door & Window Intruder Alarm (1+) £4.50

Why not tell us and our B2B sales team about your specific business needs and expectations?

At Maplin, we’re always looking for innovations and technology that can help your business work more efficiently.

With a dedicated business team and special services available only to business customers, you can access our electronics and technology solutions through our wide network of over 200 stores, our website with more than 20,000 products or though your personal account manager over the phone.

Working with organisations for nearly 30 years, Maplin offers a nationwide range of benefits to our business users:

  • 30 day EOM credit account
  • volume discount pricing
  • online and in-store use of account
  • one-to-one account management
  • bespoke product sourcing and branding
  • free delivery on orders over £10
  • scheduled and forward ordering service

Contact our business team on 

0333 400 9740 to open an account or discuss your business needs.

To receive your free copy of the Maplin Catalogue just call 0333 400 9740.


  • Home Delivery
  • Click & Collect