300 metre Wireless S Range Door Alerts with Flashing LED

S Range Wireless Door Alert with Flashing LED (900 ft)

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900 ft Wireless Door Alert System with Blue Flashing LED designed to monitor a closed door.


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177,59 €

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900 ft Wireless Door Alert with Blue Flashing LED designed to monitor a closed door being opened.

Supplied with a:

  • Battery Powered Wireless Door Contact.
  • 4 channel Wireless Receiver.
  • Blue Flashing LED with 10 ft of Cable.

In the event of the Door being opened, the Internal Receiver will chime (adjustable volume) together with activating the Blue Flashing LED for a duration of 10 - 60 seconds or 5 minutes (or until reset on the receiver).

The LED is connected to the Receiver via 10 ft of Bell Cable, which can be lengthened upon request.

Additional Door Contacts can be added including the standard 900 ft model (004-2820) supplied within this kit or the long range 2100 ft Solar Powered model (004-3800).

Door Contact:

The wireless range between the Door Contact and Receiver is 900 ft (line of sight) which equates to around 300 - 500 ft in most applications, this can be increased up to 2700 ft and by adding a Signal Repeater (004-2910), and far more by adding more.

The Magnetic Door Contact is powered by 2 x AAA batteries which would last between 1 - 2 years in most applications.

They are fitted using double sided tape and a couple of small screws in some applications, and would be fitted onto a door and door frame in such a position that both parts are within .5" from each other when the door is closed. The normal location would be on the top ledge about 1/3rd in from the hinge. 


The Indoor 4 - Channel Wireless Receiver is powered by a standard Plug in Transformer and has the following features:

  • 4 x Adjustable Dry Relay N/O or N/C Outputs (often used to trigger auto-diallers, timer relays).
  • Adjustable 12v DC Outputs (often used with sirens & flashing lights).
  • ON/OFF Switch.
  • Volume Control.
  • Will work with up to 128 sets of Sensors.
  • Optional Reminder Bleeps.
  • Exit Delay Option.
Additional Receivers (004-2790) can be added (no limit) to be used in different rooms or buildings.
Additional Accessories:
There are many types of additional sensors that can be added to this system, which include:
  • Solar Powered Magnetic Contact.
  • Solar Powered PIR's (indoor & outdoor).
  • Solar Powered Perimeter Beams.
  • Panic Buttons.
  • Solar Sirens (for use as an alert or siren). 
  • Additional Receivers.

Need Advice on choosing the best System for your personal application or Help after you have Purchased one, then please contact

us by:

Telephone: We are still available in the old fashioned way, give us a call on 01604 589414 or 01604 758438 to talk to a real person, we are happy to give you Friendly, No Obligation advice (lines open 8am to 5.30pm Monday - Thursday, 8am to 5pm Friday).

Email: If you don't have time to call us, then send us an email to info@ultrasecuredirect.com

Personal Visit: Some customers find it far easier to come and meet us for a Friendly, No Obligation Consultation (click here for full details).

  • 1 x Wireless 4 channel Receiver.
  • 1 x 3-pin Power Supply (2-pin available upon request).
  • 1 x Set of 300 metre Wireless Magnetic Contacts.
  • 1 x Blue Flashing LED with 3 metres of Bell Cable.


  • Receiver Size: 160 (W) x 105 (H) x 35 (D) mm.
  • Power Supply: 15v DC 1amp (3-pin plug in transformer).
  • ON/OFF Button: Yes.
  • Adjustable Volume Control: Yes.
  • Available Channels: 4.
  • Max sets of Sensors per Channel: 32.
  • Maximum sets of Sensors per Receiver: 128.
  • Output Voltage: 12v DC.
  • Output Voltage Duration: 1, 10, 60 second & 5 minutes.
  • Built in Chimes: Yes (one per channel).
  • Reminder Bleep: Yes (if programmed).
  • Exit Delay: Yes 5 minutes (if programmed).
  • Frequency: 434.6 MHz.
  • Standby Current: 20 mA.
  • Alarm Current: 180 mA.
  • Relay Rating: 24v DC or 120v AC (2 amp).
  • Wireless Working Range: 300 metres (line of sight).

Door Contact:

  • Size of Switch: 90 x 28 x 15 mm.
  • Size of Magnet: 90 x 13 x 8 mm.
  • Installation Method: Double Sided Tape (supplied) & 2 x Screws (optional).
  • Transmission Range: 300 metres (line of sight).
  • Contact Distance: Approximately 10 mm.
  • Batteries: 2 x AAA Batteries.
  • Battery Life: 1 - 2 years (depending on usage).

Flashing LED:

  • Colour: Blue.
  • Voltage: 9 - 12v DC.
  • Diameter: 75 mm.
  • Depth: 55 mm.
  • Fixing Methods: Screws or Double Sided Tape (supplied).
  • Cable Length: 3 metres.