HUSH-ACTIV BS 5839-6 Grade C Stand-Alone Domestic Fire Alarm Kit



  • A conventional stand-alone Grade C domestic fire detection & alarm system to BS 5839-6 (2019) for use in individual flats, houses and apartments.
  • Supplied as a cost-effective kit for ease of specification.
  • Includes all the devices you need to create a typical LD2 dwelling system (additional ActiV detection & alarm devices available for larger systems or systems requiring LD1 coverage).
  • Monitored for battery, power supply head removal & open/short circuit faults.
  • Attractive double gang Hush-ActiV controller comes with its own rechargeable and replaceable 72 hour standby battery and separate mains power supply unit.
  • In excess of 10 years battery life in normal usage.

NEED a Hush system that connects to a landlord system? Enquire about our HUSH-PRO system. Click here for details.

By buying this product you can collect up to 27 loyalty points. Your cart will total 27 points that can be converted into a voucher of $5.40.

By buying this product you can collect up to 27 loyalty points. Your cart will total 27 points that can be converted into a voucher of $5.40.

Technical Specifications

CompatibilityCompatible with C-TEC's ActiV range of conventional fire alarm devices.
Total output current limited to100mA
Battery charge capacity2Ah.
Quiescent current5mA.
Max battery size and type2Ah Li-Ion battery supplied (replaceable, up to 10 year life).
No. of detector zone circuits1.
No. of conventional sounder circuits1.
Indicators4 x LEDs on Hush Controller: Supply (green); Fault (yellow); Alarm (red); Hushed (amber).
Controls1 x TEST button; 1 x HUSH button.
Expansion connections1 x unmonitored open collector Fire output (follows the dwelling's sounders but ignores system Tests); 1 x unmonitored open collector Fault output; 1 x unmonitored Alarm trigger.
Onboard SounderYes. Provides audible feedback of a fire/fault condition.
Product dimensions (mm)Hush Controller: 146 W x 85 H x 25 D mm (Can be mounted on a standard UK 35mm double gang flush or surface back box).
Construction & finishSupplied on a double gang plastic plate.
IP RatingIP40.
Operating conditions/temperature-5ºC to +40ºC. Max relative humidity: 95%.


1 other products in the same category:

Video overview

HAK/1 Kit Contents

1 x Double Gang Hush-ActiV Controller c/w 72 hour standby battery 

1 x Double Gang 230V/24V 250mA PSU

1 x ActiV multi sensor

1 x ActiV smoke detector

1 x ActiV 60ºC heat detector

3 x ActiV diode detector bases

1 x ActiV base sounder 

1 x lid for base sounder

Optional decor plates available for use with ceiling mounted ActiV devices to cover the decorating marks left when used to retrofit older Grade D alarm devices.

Why Hush-Activ?

Raises the typical level of fire protection in a dwelling from BS 5839-6 Grade D (unmonitored Mains/Battery Alarms) to Grade C (monitored wiring and a central controller)

No need to stand on a chair to Test or Hush/Silence devices

All field wiring monitored for open and short circuit faults

Up to 50% reduction in the mains power consumption of a typical Grade D system, less plastic and only one replaceable lithium-ion battery per system providing over 72 hours standby

Separate fire detectors and sounders are less expensive to replace than Mains/Battery Alarms and all smoke detectors have built-in drift compensation to increase service life expectancy

Monthly user/occupant test is sufficient

Utilises the same wiring scheme as most Mains/Battery Alarm solutions

Hush-Activ Operation

  • Press HUSH when there is an Unwanted Alarm to silence the system for 2 minutes (extendable by a further 2 minutes if the Alarm has not cleared). Press TEST for 3 seconds when the system is in its normal state to briefly sound the Alarm sounder(s). BS 5839-6 2019 recommends this test is carried out by occupants at least once a month.
  • Press HUSH when a wiring or battery fault is detected to silence the fault buzzer for 24 hours. Occupants should report the fault to the responsible person/service engineer at their earliest convenience
  • Press HUSH when the system is in its normal state to deactivate alarm detection for 15 minutes (’hot works’ function).