NJS Limited Intruder Alarms in Darlington, County Durham

Backed by a wealth of experience, NJS Limited provides effective home security systems. Based in Darlington, County Durham, our specialist team is dedicated to offering affordable security systems that will enhance the security of your property at a very competitive price with a back up service exceeding your expectations.

Wired Intruder Alarms Upgrades from £195.00

Fully Installed Orisec CK-20 Hybrid Wired Alarm System,

Our wired Orisec systems are a stylish and affordable system for your home or business premises.

1 x Control Panel

1 x Digital LED remote keypad

Test and reconnect all existing detectors, sensors and sounders


Optional Upgrades

CM2 WiFi module for APP / remote access with free remote support and assistance - connection to your WiFi network (you need to ensure that 2.4Ghz is active on your router)

Proximity arming tags for codeless access

Wireless module to allow the system to receive a range if wireless accessories

Many more optionsavailable

Wireless Intruder Alarms from £399.00

Fully Installed Pyronix Enforcer Wireless Alarm System, Our wireless Enforcer Alarm systems are at the absolute forefront of security technology. Protect your home or business premises today with one of the most advanced systems on the market


Grade 2, Insurance Standards
1 x Control Panel/LCD Display Keypad
2 x Wireless Alarm PIR Sensors – Optional Pet Tolerant version at no added cost
1 x Wireless Alarm Door Contact
1 x Wireless External Alarm Bellbox


Wifi Communication Module – existing Internet required
Notification via HomeControl+ App including first 12 months subscription (worth £35)
Part Arm Function
Remote Arm/Disarm Function
12 Month Product & Installation Warranty

Sounder Upgrades £90.00


Excellent deterrent - day or night, upgrade your old and tired looking external bell / sounder with our high visibility unit now for only £80 (free upgrade with our wired systems above) 

The Deltabell-X with light box provides an excellent deterrent day or night. The Lightbox provides superior lighting to the front of the sounder while the backlit feature shines through the base.


Featuring cover, base and power tamper protection, you can be assured that you will be alerted to any attempts to disable your bell


With twin piezos, covered electronics, tamper protection backlight and front light options, the Deltabell X provides excellent performance and with its unique patented style, will look great on any style of building.


Twin piezo sounders with high decibel output and built in cut-off timer defaulted to 15 minutes to meet industry regulations.

Fire Detection

Fire alarm systems are essential in both domestic and commercial premises, with an average detector life of about 10 years, when was your alarm last checked ?.

We've all seen the adverts on television about how they could save your life, and they’re right: they could potentially make all the difference in an emergency.

At NJS Limited, we install, repair, and service fire alarm systems. A satisfactory fire alarm system will automatically detect fire at an early stage, indicate its location, and raise an effective alarm sound to give you enough time to react.

If your current system is causing problems, or you are planning to install a fire alarm system today, do not hesitate to pick up the phone and give us a call. We’ll come and have a look for you, or give you a free estimate. All our estimates are free of charge and there is no obligation to buy.

CONTACT OUR home security experts in Darlington, County Durham, for details about the security systems we provide.