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Accessible Toilet Alarm

N C 9 5 1   •   D E S I G N   &   I N S T A L L A T I O N   G U I D E

Approved Document No.: DNU0951001 Rev 5 • Page 1 of 8

Re

ception Are

as

A

cce

ssible Toil

et

s

In

terv

iew Roo

m

s

Ch

anging Room

s

Single Zone Emergency Assistance Alarm

+

-

1
2
3
4

Indicators will operate: 

Intermittently when help is on the way

R

RE

ES

SE

ET

T

Indicators will operate: 

Continuously when pull cord is activated

Intermittently when help is on the way

On

Calling

Call Accept

NC951

 KIT CONTENTS

NC809DBBT

 Accessible Toilet Reset Point c/w Sounder

Includes a ‘Reset’ button c/w braille text, red 

reassurance LED and sounder.

NC807C

 Ceiling / Wall Pull

Includes a red reassurance LED, red pull cord 

and two triangular pull bangles.

NC949

 Accessible WC 

Sticker

NC943B

 Single Zone Call Controller c/w Sounder

Includes a link selectable ‘Call Accept’/’Reset’ button, 

‘Calling’ and power ‘On’ LEDs, 140mA PSU, backup 

battery, volt-free relay output and sounder.

NC806CS

 Overdoor Light c/w Sounder

Accessory Pack

Containing device 

mounting screws 

and shorting link.

Documentation

A Design & Installation 
Guide (this document).

This equipment must be installed and maintained by a suitably skilled and technically 
competent person.

This document provides a brief design and installation overview of the NC951 accessible 
toilet alarm system, based on the recommendations of BS 8300 (the code of practice for the 
design of buildings and their approaches to meet the needs of disabled people).

Approved Document No.: DNU0951001 Rev 5 • Page 8 of 8

TECHNICAL SPECIFICATIONS

NC943B

 Single Zone Call Controller c/w Sounder

Mains supply: 

Voltage: 230Va.c. 50/60Hz; Max. current: 23mA.

Outputs:   

PSU voltage 12Vd.c. / current 140mA.

 

 

Volt-free relay contacts (NO/C/NC) rated 30Vd.c. @ 1A.

Currents:  

Zone current 18mA; Alarm current 23mA.

Battery backup: 

500mA, rechargeable, 24 hours standby plus 15 minutes alarm run time.

Indicators: 

Red alarm ‘Calling’ LED; Green power ‘On’ LED (flashes green when  

 

 

battery backup is active).

Sounder:  

Active in alarm, volume adjustable.

Controls:  

‘Call Accept’ button (link selectable for accept, reset, or no function).

IP Rating 

(EN 60529)

: IP31 when correctly installed.

Mounting: 

Mounts on 25mm UK double gang back box (flush or surface).

Dimensions: 

147 x 87 x 39mm (W x H x D).

Weight:  

300g

Operating Temp.:  -5

o

C to +40

o

C; Max. relative humidity (RH) 95% non-condensing.

NC807C

 Ceiling / Wall Pull Unit

Input: 

 

Voltage: 12Vd.c.; Connections: Signal and -Ve.

Pull cord:  

3 metres cord length, generates an alarm call when activated.

Indicator:  

Red reassurance LED, active in alarm.

IP Rating 

(EN 60529)

: IP41 when correctly installed.

Mounting: 

Ceiling or wall surface mountable.

Dimensions: 

93mm diameter x 27mm deep.

NC806CS

 Overdoor Light c/w Sounder

Input: 

 

Voltage: 12Vd.c.; Connections: Signal, -Ve and +Ve.

Indicators: 

Dual ultra-bright red LEDs, active in alarm.

Sounder:  

Active in alarm.

IP Rating 

(EN 60529)

: IP41 when correctly installed.

Mounting: 

Mounts on 25mm UK single gang back box.

Dimensions: 

87 x 87 x 68mm (W x H x D).

NC809DBBT

 Accessible Toilet Reset Point c/w Sounder

Input: 

 

Voltage: 12Vd.c.; Connections: Signal, -Ve and +Ve.

Indicator:  

Red reassurance LED, active in alarm.

Sounder:  

Active in alarm.

IP Rating 

(EN 60529)

: IP41 when correctly installed.

Mounting: 

Mounts on 25mm UK single gang back box.

Dimensions: 

87 x 87 x 24mm (W x H x D).

E&OE. We reserve the right to alter product specifications at our discretion and without prior notice. This document has been 
carefully checked prior to publication. However, no responsibility can be accepted by the manufacturer or distributors of this 
equipment for any misinterpretation of an instruction or guidance note or for the compliance of the system as a whole.

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