SD-604-4 (DC 9V ~ 35V) Wired Smoke Detector With Relay

The SD-604-4 Wired Smoke Detector with Relay is a high-performance fire detection device that complies with EN54-7:2008 standards and holds CE certification. It operates within a voltage range of DC 9V to 35V, with support for higher voltages up to DC 40-60V, making it suitable for diverse applications. This smoke detector features a low standby current, consuming less than 50 µA in both 2-wire and 4-wire configurations. In alarm mode, it draws 20-25 mA at 12V and 40-50 mA at 24V for 2-wire setups. For 4-wire configurations, the device allows for up to 25-30 mA for normally open (NO) relay contacts and 20 mA for normally closed (NC) contacts. An integrated red LED provides visual indication during alarm conditions, and the unit can be reset by power cycling or automatically. The alarm output includes a remote LED for 2-wire systems and a relay output for 4-wire systems, with a contact rating of 0.5A at DC 28V for 4-wire setups. With a sensitivity range of 0.08-0.16 dB/m (±0.1 dB/m), the SD-604-4 ensures effective smoke detection. Its compact design, measuring Ø99 mm x 43.5 mm, includes a reed switch for testing, enhancing usability and maintenance.