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INTRODUCTION

 

 
 
The FireHawk FH550RF Radio Base is designed to replace the baseplate 
supplied with the 250 and 450 ranges of mains powered smoke and heat 
alarms. When assembled to a maximum of 15 smoke or heat alarm on any 
one system, it allows the installer to power them all from a regularly used 
local lighting circuit (BS5839-6:2004 section 15.5) without the need to run a 
separate interlinking wire.
The built in 10 year tamper-proof lithium battery will ensure continued 
operation in the event of a mains power failure.
The built in multicolour LED provides helpful indication during the simple two 
stage set-up procedure and lifetime operation.   

INSTALLATION

 

 
 

 

WARNING: 

This device and any connected alarms should be installed by 

a qualified electrician and in accordance with BS 7671. Do not expose to 
dripping or splashing. Install the FH550RF Radio base behind all smoke and 
heat alarms in circuit. Ensure all connected circuits are disconnected from the 
mains power supply before installation.

DO NOT USE WITH ALARMS BEARING OTHER BRAND-NAMES 
OR MADE BY OTHER MANUFACTURERS.

The power supply should be from one of the following two sources (See BS 
5839-6:2004) section 15.5:-
a.  An independent circuit at the dwellings main distribution board with no 

other electrical equipment connected (other than a dedicated supply failure 
monitoring device) or:

b.  A separately electrically protected and regularly used local lighting circuit.
Only suitably approved cabling should be used. The alarms and FH550RF Radio 
Bases should be wired using a minimum of 1mm2 “2 core and earth” cable; 
with the Brown to Live (L) and Blue to neutral (N). All alarm circuits should 
be protected by a 6amp over-current device. The maximum total length of 
wiring should not exceed 250m. Mini-trunking systems can be used via the 
removable blank shown in Fig.1 below 
 
 
 

WARNING: 

Ensure the power supplies are turned off before installing this 

Radio Base.

FAST-FIX REMINDER FOR FREQUENT USERS ONLY
1.  Set rotary switches on all bases to the number of bases in the system
2.  Switch on battery, Install bases in position and switch on mains power
3.  Press the learning mode button on all alarms within 8 minutes.
4.  Ensure the green LED is flashing every 8 seconds.

1. FULL AND DETAILED  

INSTALLATION OF ALL RADIO BASES  

INTO THEIR POSITIONS

 

1.  Ensure that the mains supply is switched off.
2. 

IMPORTANT: 

Ensure that the rotary selector switch (see Fig 2) is set to 

the number that equals the amount of radio bases in the complete system; 
ie if you have 2 alarms in the complete system then the rotary selector 
switch on all alarms should be set to 2.

3. 

DO NOT SET ANY ROTARY SELECTOR SWITCH TO 0: SEE 
“IMPORTANT INFORMATION” BELOW.

4.  Switch the Battery Switch to the “on” position. (See Fig 3) The LED will 

start to flash Green.

5.  Connect the power supply wires to the connection terminals on the RF-

Base. (See Fig 1) Make sure that the wires are connected correctly; ie Live 
to L, Neutral to N and the interlink wire (if used) to I.

6.  Repeat the above process for all Radio Bases you intend to use.
7.  WARNING. Re-chargeable batteries may be depleted. Do not leave on 

battery only for more than a few minutes.

If the rotary selector switch of all units is in position 2 to F then all units must 
take part in a learning process before the system becomes operational. After 
a successful learning process the group of units can be considered a “family 
of friends”. Only members of the family are able to communicate with each 
other, i.e these family units do not respond to any units in “0” position or 
other radio base systems in adjacent properties. A maximum of 15 units can 
be fitted to this family.

 
 

IMPORTANT INFORMATION: 

1.  If the rotary selector switch is in position 0 (factory default) then all units 

will communicate without restrictions and learning mode is switched off.

2.  This means that these units will link with any other units whose position is 

set at 0 or any other position (2-9 or A-F) that are within range.

3.  This could lead to “false” alarms caused by alarms in adjacent properties.
4. 

IT IS STRONGLY RECOMMENDED THAT YOU DO NOT LEAVE 
ANY RADIO BASE IN THE 0 FACTORY DEFAULT SETTING.

2. THE LEARNING PROCESS

1.  Ensure you have set the rotary 

selector switch on all radio bases to 
the same number that should equal 
the number of bases in the system. 
For example, if you have 2 bases in 
the system, the number 2 should 
be selected on ALL radio bases. If 
you have 11 in the system then 
the letter B should be selected. See 
Table 1.

2.  Switch on the mains power supply

3.  Press the small learning button 

(Fig 4) for ½ a second to start the 
learning process. A flashing Red LED 
o the side of the base indicates that 
a given unit is in “learning mode”.

4.  Repeat this learning process for 

each unit in the system within 8 
minutes. 

5.  Check that the Green LED is flashing every 8 seconds on all installed bases; 

this indicates that the system is operating normally, and that all units are 
linked.

6.  FireHawk alarms from the 250 or 450 range can now be installed directly 

onto the Radio Base using the instructions supplied with them. Please 
discard the mounting plate supplied with the alarm. Test all alarms using 
the test button. Repeat this learning process for each unit in the system 
within 8 minutes.

SET-UP TROUBLE SHOOTER

 

1  The alarm beeps every 64 secs – Check the 3 x AAA batteries have been 

fitted to the alarm where required and that the 230v supply to the radio 
base is connected and on.

2  The radio base beeps every 64 secs – Check that 230v supply is connected 

and on. Allow the batteries to charge.

3  The Red LED is flashing every 8 seconds (and the rotary selector switch is in 

position 2 to F See table 1). This indicates that either:- 
a) no learning process has taken place, or 
b) the last learning process failed due to timeout (more than 8 minutes ), or 
c) there was an error on one or more of the rotary selector switch settings.

To correct this, check that the rotary selector switches of all units have 
the same setting and re-start the learning process by pressing the small 
installation push button for ½ a second on all units, as per Step 2. If this 
still do not solve the problem, try to troubleshoot and solve the problem by 
excluding one unit at a time from the family of units by disconnecting the 
mains supply and turning off the battery. When doing this, do not forget to 
change (decrease) the number on the rotary selector switch on each unit, 
before re-starting the learning process as per Step 2.

NOTE: 

As per IMPORTANT INFORMATION above, if the rotary selector 

switch is in position 0 on any unit, then that unit will hear any other unit 
anywhere within range, regardless of their code settings.
If another unit with different number selected on the rotary selector 
switch code selector is located during the learning process, the unit is 
“locked” and the Red LED lights together with beep sound. (As per table 2 
above) This will continue until:
1. the installation button is pushed, or
2. the mains supply is switched off, or
3. until one hour has elapsed
If there is a power supply failure during the learning process, you need to 
start from the beginning of Step 2

PRODUCT WARRANTY

 

FireHawk guarantees to you, as a purchaser, that the enclosed Radio Base 
will be free from defects in material, workmanship or design under normal 
use and service for a period of 10 years. This Guarantee is not assignable. 
Our liability to you, under this guarantee is limited to repairing or replacing 
any part which we find to be defective in material, workmanship or design, 
free of charge to the customer, upon sending the product with proof of 
date of purchase, postage paid to FireHawk, Units 15/17 Manford Industrial 
Estate, Manor Road, Erith, Kent DA8 2AJ UK. The terms of this guarantee will 
not apply in the following circumstances: If the product has been modified, 
dismantled, contaminated, damaged, neglected or otherwise abused or 
altered following the date of purchase, or if it fails to operate due to incorrect 
siting, installation, maintenance or inadequate or over voltage AC electrical 
power, or damage caused by failure to abide by the instructions supplied no 
claim under the guarantee will be entertained. The liability of FireHawk arising 
from the sale of this product or under the terms of this guarantee shall not 
in any case exceed the cost of replacement of the alarm. In no case, shall 
FireHawk be liable for consequential loss or damage resulting from the failure 
of the device or the breach of this or any other guarantee, express or implied 
or for damage caused by failure to abide by the instructions supplied. This 
guarantee does not affect your statutory rights.

Fireblitz Extinguisher Ltd.

 

Units 15-17 Manford Industrial Estate,  

Manor Road. Erith, Kent DA8 2AJ

Telephone: 01322 342238 

TECHNICAL HELPLINE 0800 008 6568

Text on 07885 831239

Email: [email protected]

MANUAL

FRONT

BACK

FH550RF

READ AND RETAIN THIS USER MANUAL

Rechargeable 

Lithium Cell 

BACK-UP

FIG. 1

FIG. 3

FIG. 2

TABLE 2

TABLE 1

MAINS POWERED

Radio Base

Mains  

Connectors

Learning 

Button

Removable blank 

for Mini-trunking

Rotary

Selector 

Switch

LED

 Number 

Number 

 of units 

on 

 to  install 

selector

 2 

2

 3 

3

 4 

4

 5 

5

 6 

6

 7 

7

 8 

8

 9 

9

 10 

A

 11 

B

 12 

C

 13 

D

 14 

E

 15 

F

FLASHING LED COLOUR SEQUENCE

Red – Red – Red

 

No other bases located yet

Red – Green

 ( alternating) 

One or more located, not all

Green – Green - Red

 

All located but not connected yet

Green - Green

 (repeating) 

All connected, nearly complete

Red

 (Steady) + beeping 

Error. Check settings and re-start

No LED

 within 15 seconds 

Learning process timed out

Green

 every 8 seconds 

System set correctly

Battery Switch

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