Brief of Sentek

Sentek is a company specializing in designing, developing and manufacturing fire and security products, such as smoke detectors, heat detectors, flame detectors,combustible and toxic gas detectors, magnetic contacts, and so on.

SK-20 INSTALLATION INSTRUCTIONS

Thanks for buying the Sentek photoelectric smoke alarm.Read all instructions before installing the smoke alarm, so it will protect your home in the best possible way.
·If you are installing the smoke alarm for some other person, leave these instructions or a copy of them with him/her.
·The Sentek photoelectric smoke alarm is also suitable for use in a travel vehicle, such as camper vans, caravans, and boats.

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1. POSITIONING THE SMOKE ALARM

·Place at least one smoke alarm per 60 m 2 on each floor.
·Place a smoke alarm in each corridor and bedroom.
·The smoke alarm is to be placed on the calling in such a way that it is in the middle of the room.
·Place a smoke alarm at the top of each staircase.

AVOID THESE POSITIONS:

Near a wall or corner: Place the smoke alarm at a distance of at least 50 cm from a wall or corner.
Moist places: Avoid installing smoke alarms near moist or occasionally moist places such as immediately close to a shower or kitchen, where steam can cause false alarm.
Ventilation ducts: Avoid installing a smoke alarm immediately next to a ventilation duct. The draft may prevent smoke from reaching the smoke alarm. Smoke alarm can't be installed in the location where the air velocity is more than 300 ft/min(1.5 m/sec).
Dead-air spaces: Avoid installing a smoke alarm in the angle of a pitched roof. Install it at a distance of least 10 cm from the ridge.
Fluorescent lamps: Avoid installing a smoke alarm immediately next to fluorescent lamps, such as halogen lights.
Radiation heating source: Avoid installing a smoke alarm radiant heat ing source, such as radiant heating in the ceiling can create a hot air boundary layer alongthe ceiling surface, which can seriously restrict the movement of smoke and heat to a smoke alarm.

2.OPERATION AND TESTING

Alarm mode: The red light flashes once every 344 seconds in normal mode. When the smoke alarm detects smoke, it goes into an a larm mode in which the
smoke alarm beeps continually and red light flashing.
Test mode: The entire surface works as a test button.Press the test button of the smoke alarm for more than one (1) second, until you hear the alarm sound and see
light flash. Loosen the button the smoke alarm will go into silence mode (9 minutes).
Silence mode: If the test button is activated during a local a larm, the smoke alarm is immediately reset out of the alarm condition, and the beep is silenced.When the test button is deactivated, the device enters into a 9 - minute nominal silence mode. In silence mode, the red light flash once every 10 seconds to indicate that the mode is active . The silence mode will be cancelled if any of the following conditions exist: • high smoke lever. • test button is activated again.
Error mode: The smoke alarm sends out 'beep' three times every 43 seconds. Removed the smoke alarm from the mounting plate and clean up the surface dust,
then install the back. If the smoke alarm is still in an error mode, contact the importer or manufacturer.

Low battery: When the battery is used up, the smoke alarm beeps at intervals of 43 seconds. You can silence the beep by press the test button for 3s, in the 3s the
red led on and the beep on, after the 3s you should release the test button, and the 'beep' prompt is silenced for 8 hours. The activation of the test button will also
initiate the 9 minutes silence mode(See Silence mode ). At the endof the 8 hours, the audible indication will resume if the low battery condition still exists.

Local Alarm Memory: Initially , the green light can be used to visually identify any unit that hadpreviously been in a local a larm condition. The green light flash three
times spaced 1.3 seconds apart , this pattern will repeat every 43 seconds, this visual indication will stop after a period of 24 hours. You will still be able to identify a unit with an active alarm memory by pressing the test button. When this butt on is active, the beep sound will be once every 2.5 seconds.If the alarm memory condition is set, then any time the test button is pressed and released, the alarm memory latch is reset. The initial 24 hours visual indication is not displayed if a low battery condition exists.
End of life indicator: After 10 years of operation, an audible warning signal occures to indicate that the smoke alarm should be replaced. This indicator will be similar to the error mode warning that the smoke alarm sends out ' beep' three times every 43 seconds.

3.MAINTENANCE

Battery life: The smoke alarm contains 3V lithium battery(CR123A). Their lifetime is 10 years.When the battery is used up, the smoke alarm beep at intervals of 43
seconds for at least 30 days. If the battery is used up, replace smoke alarm as soon as possible.
Warning: Lithium batteries can explode or cause burning if they are installed incorrectly. User is not recommended to replace batteries.
Clean the smoke alarm at least once a year: Separate the smoke alarm from the installation plate by turning it counterclockwise. Separate the smoke alarm carefully.
Test the smoke alarm after cleaning it.
Do not paint or modify the smoke alarm!
Waste handing: The smoke alarm should be disposed in accordance with normal waste handing for electronics.

4. TECHNICAL INFORMATION

Operating principle: Photoelectric
Voltage: 3V (built-in lithium battery)
Warranty: 5 years
Quiescent current: < 3uA
Alarm current: < 200mA
Operating temperature: 0℃~ 45℃
Sound volume: ≥ 85 dB at a distance of 3 meters
Dimensions: 42.5 × Φ50.8mm
Weight: 54 g
Holding temperature of 3M attachment tape -35℃~ 93℃
Maximum humidity: 93%
Conform to the standard: EN14604

5. GUARANTEE

Sentek grants a 5 years guarantee, starting from the purchase date of the product. If the smoke alarm becomes defective during the guarantee period, the smoke alarm will be replaced with a new one if the defective one is sent to Sentek. The guarantee covers manufacturing or material defects in the product, if the smoke alarm has been used according to the user instructions and the guarantee period has nor expired. The guarantee period for a smoke alarm that has been replaced with a new one is the same as that of the original smoke alarm.The guarantee is not valid if 1) the product is used, maintained, or tested contrary to the user instructions, 2) the defect has been caused by a negligent act by other than Sentek, or 3) if the product has been modified or treated with force, or if it the guarantee receipt is missing. The guarantee does not cover costs due to installation or battery replacement. Sentek responsibility does not in any case exceed the price of a new smoke alarm. Sentek is not responsible for any damage or loss that has been caused by a non-working smoke alarm or negligence by the anufacturer. This guarantee does not affect rights enacted by law.

6. PRODUCT COMPONENTS DRAWING

7. INSTALLATIONS

A smoke alarm can be installed in two different ways:
(1) Quick installation with 3M double- sided tape or (2) by installingthe smoke alarm with screws.
Note: Installation with 3M two - sided tape is not approved according to Great Britain's LPCB standard.

 

(1) QUICK INSTALLATION WITH 3M DOUBLE-SIDE TAPE
Make sure that the installation surface is even and cleaned thoroughly. If the ceiling is uneven surface or rough in texture, install the smoke alarm with the screws supplied.

1) Activate the smoke alarm by pushing the mounting plate and turning it clockwise at the same time. The smoke alarm is activated and ready to be installed whenyou feel clicks. you may also hear an alarm sound if thetest button gets pressed during activation.

2) Remove the white cover on the double sided tape, then paste on the mounting plate.

3) Remove the red cover on the double-sided tape.


4) Attach the smoke alarm by pressing it firmly against the ceiling for approximately 60 seconds. You may also hear an alarm sound if the test button gets pressed during installation.
5) Make sure that the smoke alarm is activated by pressing the test button for 1seconds. When the smoke alarm gives an alarm sound, the testing has been performed successfully and your smoke alarm is ready for use.
The installation is now complete.
Test your smoke alarm weekly!


(2) INSTALLATION WITH SCREWS

1) Remove the mounting plate of the smoke alarm by turning it counterclockwise and lifting it away.

2) To achieve the correct smoke alarm positioning, then mark drill holes for the screw anchors.in stall the mounting plate of the smoke alarm tightly to the ceiling with the screws.

3) Press the smoke alarm against the mounting plate and turn it clockwise until you feel clicks.

4) Make sure that the smoke alarm is activated by pressing the test button for 1 seconds. When the smoke alarm gives an alarm sound, the testing has been performed successfully and your smoke alarm is ready for use.

The installation is now complete.
Test you smoke alarm weekly!

 

 

DWG No. K04402001 Rev.1.2

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Certificates & Honors

Certificates

VDS Zertifikat Certificate SK-20

Approval No.G217063

LPCB Certificate SK-20

Certificate Number: 1050b

SAI Certificatee SK-20

Licence No: SMK40811

BRE Global Ireland SK-20

Certificate of constancy of performance 2831-CPR-F1312

Single-site smoke detector Stand-alone smoke detector

Product Features
• Photoelectric sensor for ultimate protection.
• Big Test/Silence button at front cover for more convenient user interaction.
• 10 years lithium battery – no battery changes for ever.
• Install simply and quickly using screws (included) or almost instantly with unique 3M VHB adhesive tape.
• Test: button for testing smoke alarm’s correct functioning when push the button more than 0.5 seconds.
• Silence function to silence false alarms and temporally desensitizing smoke alarm, just press and release at once.
• Low Battery warning or The Chamber test fail warning: If either the low battery test or the chamber test fails, the horn will beep 10ms every 43 seconds until the failing condition passes. If two consecutive chamber test fails, the horn will pulse on three times for 10ms, separated by 330ms every 43 seconds, Each of the two supervisory test audible indicators is separated by approximately 20 seconds.
• Low battery hush: If a low battery condition exists, the horn will be silenced for 8 hours after pressing the test button.
• End of Life Indicator: After 10 years of powered operation, an audible warning will occur indicating that the detector should be replaced.
• Local Alarm Memory: the feature allow easy identification of any unit that had previously been in a Local Alarm condition.
• Approval: EN14604:2005 by LPCB & VDS

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Ningbo Sentek Electronics Co.,Ltd.

Established in 2005, We Ningbo SENTEK Electronics CO.,LTD is a professional company owns a whole industrial chain, which has research and development, production, sales and service in one, to commit to fire and security detection and system with standardized management. We manufacture smoke alarms/detectors, heat alarm/detectors, gas/CO alarm/detectors, especially for the smoke alarm which have wire or wireless different types, normal or micro size difference dimensions, certificates by different labs. Based on professional level and technical innovation, SENTEK focuses on creating the corporate image of “Safety is sensor technology” and is rated as a high-tech enterprise.