DC 9V ~ 35V Wired Photoelectronic Smoke Detector (SD-602-4 )

The SD-602-4 Wired Photoelectronic Smoke Detector with Relay is engineered for reliable fire detection, conforming to EN54-7:2008 standards and certified by CE. It operates within a versatile voltage range of DC 9V to 35V, with additional support for higher voltages up to DC 40-60V, making it suitable for various fire alarm systems. This smoke detector features low standby current consumption, drawing less than 50 µA for both 2-wire and 4-wire configurations. In alarm mode, it consumes 20-25 mA at 12V or 40-50 mA at 24V for 2-wire systems, while the 4-wire configuration draws up to 25-30 mA for normally open (NO) relay contacts and 20 mA for normally closed (NC) relay contacts. An LED indicator alerts users to alarm conditions, and the device can be reset either by power cycling or automatically. For alarm outputs, it provides a remote LED indication for 2-wire systems and a relay output for 4-wire configurations, with a contact rating of 0.5A at DC 28V for the latter. With a sensitivity range of 0.08-0.16 dB/m (±0.1 dB/m), the SD-602-4 effectively detects smoke, ensuring timely alerts in the event of a fire. Its compact dimensions of Ø103 mm x 53 mm facilitate easy installation in various environments.