KEY FEATURES

Alarm memory – identifies source unit within interconnecting network

Reduced energy consumption – lower lifetime running costs

Dust compensation and bug screen – reduces nuisance alarms

Combined Test/HushTM button allows regular testing of alarm function and can be used to temporarily silence nuisance alarms

Auto reset after activation

Tamper-resistant locking device prevents unauthorised removal without the use of a tool

Mains operation – Built-in rechargeable Lithium back-up tamper-proof battery

WHERE TO USE 

Optical alarms are for use in escape or circulation routes and in areas where there is a danger of ignition of furniture and surroundings by cigarettes producing slow, smouldering fires. This mains-powered unit should be installed by a qualified electrician and can be used throughout the home, except in the kitchen where a Firex Heat Alarm is recommended. These alarms comply with UK Building Regulations for new housing and associated standards (Grade D BS 5839, Part 6).

GENERAL FEATURES

Power Supply 230V mains-powered with rechargeable Lithium battery back-up

Temperature Range 0ºC to + 40ºC

Humidity Range Up to 93% Relative Humidity (RH) non-condensing

Storage and Transport -20ºC to +60ºC and 5–95% relative humidity (RH) non-condensing

Alarm Dimensions 127 x 127 x 39mm

Bracket Dimensions 133 x 133 x 6mm

Alarm Weight 242g

Warranty 6 years (including battery)

Approvals BSI certified to BS EN14604:2005

CE tested and certified

TECHNICAL SPECIFICATION

Sensor Optical: Circular lateral chamber with insect-resistant width, 9-slot entry portals

Chamber Size: 35mm outside diameter x 16mm depth approximate (external)

Detection Band: Infrared light wavelength

Button Test: Simulates the effect of smoke within the sensing chamber, checks electronics and sounder

Automatic Self-test: Circuitry is tested and unit beeps (chirps) if fault is detected

Supply Voltage: 230V AC, 50 Hz (nominal UK voltage)

Power Consumption: < 15mA

Connection: Push-in/snap-fit type connector with 150mm long flying leads (supplied)

Battery Back-up: Non user-replaceable 3 x 3V rechargeable Vanadium Pentoxide Lithium cells (VL2330)

Power-on Indicator: Continuous green LED

Alarm Sounder: Electronic piezo-electric sounder (T3 pattern sound - three pulses - space - three pulses) with soldered contacts

Sound Output: 85dB (A) minimum at 3 metres

Alarm Frequency: 3.2 kHz typical

Dust Protection: In-built foam gasket in rear of alarm to prevent dust ingress into rear of the alarm

Alarm Status: Red LED flashes approx once every five minutes = normal operation, Red LED flashes once a second = sensing smoke (sounder alarm sounds), Red LED flashes once every ten seconds = in hush condition (auto-reset after 15 minutes)

Interconnection: Up to 24 Firex and Kidde ‘Slick’ units (smoke, heat and CO) can be hardwire interconnected with optional control (see below)

Optional Controls: Wired Remote Test and Hush Unit (REMTH) allows test and hush of interlinked units

Optional Pattresses: SMK23RU also has integral switchable relay for operating remote devices or SMK4896 – Surface mounting base for added ease of installation

Fixing: Mounting bracket ring supplied with two ‘T’ slot fitting option, 57mm spacing to a maximum of 90mm for standard screw fittings on back boxes, Bracket has 50mm diameter central access hole for cabling

Plastics used: NORYL – Cover, main body and mounting bracket

Lead-Free Status: All Firex alarms are lead-free