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Jablotron SD-283ST wired Smoke detector with Siren

The Jablotron SD-283ST detects fire inside residential or commercial buildings.

Wired combined smoke and heat detector with built in siren.

Availability: In stock

SKU

SD-283ST

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€78.00 €64.46

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Details

The detector indicates fire hazard using the built-in LED indicator and acoustic signalling. The detector can also be powered from an external 12 V DC source or from the alarm system control panel and it provides ALARM and TMP outputs. When the detector is used with inserted batteries (3x 1.5 V AA), it can continue operating as a stand-alone detector when the external 12 V power supply is disconnected.

The SD-283ST consists of two independent detectors – an optical smoke detector and a heat detector. The optical smoke detector works on the principle of scattered light. It is very sensitive to large dust particles which are present in dense smoke. It is less sensitive to smaller particles generated by the combustion of liquids such as alcohol. That is why the fire detector also contains a built-in heat detector which has a slower reaction but is much better at detecting fire which generates only a small amount of smoke.

Technical specifications

Power	9 – 15 V DC / 3.5 mA (150 mA during an alarm) or 3 pcs of AA 1.5 V alkaline batteries
Typical lifetime	approx. 3 years
Smoke detection	optical light scattering
Smoke detector sensitivity	m = 0.11 - 0.13 dB / m pursuant to EN 14604:2005, EN 54-7
Heat detection	class A1 according to EN 54-5
Alarm temperature	+ 60 °C to +65 °C
Operating temperature range	-10 °C to +65 °C
Dimensions, weight	diameter 126 mm, height 52 mm, 150 g
Conformity	EN 50130-4, EN 55022

Reviews

Product Questions 3

Product Questions

After how many years do I have to replace an old fire detector with a new one?

Question by: Wolfgang on Jun 7, 2025, 1:22 PM

A fire detector (smoke / heat detector) should generally be replaced every 10 years. This is the standard service life of most smoke detectors, including those from Jablotron, Notifier and DSC.

Why replace after 10 years?
> Sensor ageing: The smoke detector loses its sensitivity over time.
> Battery wear: Even models with long-life batteries can run out after 10 years.
> Reliability: After 10 years, the risk of faults increases and security systems must always be reliable.

Regards

Answer by: Frank Ligthart (Admin) on Jun 7, 2025, 1:26 PM