The SD-605H-4 is a versatile wired photoelectronic smoke and heat detector designed to offer dual detection for both smoke and heat in environments requiring heightened safety measures. With an operating voltage range of DC 9V to 35V, it is compatible with most modern alarm systems. It operates efficiently with a low standby current of 80 µA, making it energy-efficient without compromising on performance. In alarm conditions, the current consumption increases to a maximum of 40 mA, with a clear red LED indicator providing visual feedback. The device can reset either automatically or by powering off. The operating temperature range of -10°C to +50°C, along with a maximum operating humidity of 95% RH, ensures that it functions reliably even in challenging environments. It also features heat detection capabilities that trigger an alarm when the temperature reaches 57°C. The SD-605H-4 supports both 2-wire systems with a remote LED and 4-wire systems with a relay output, making it flexible for different configurations. The smoke detection sensitivity ranges from 0.08 to 0.16 dB/m (±0.1 dB/m), ensuring accurate performance. Certified according to EN54-7:2008 standards, this detector is built to meet international fire safety regulations. Its compact size, with dimensions of Ø99 x 60.5 mm, makes it suitable for various installations.
| Feature | Specification |
|---|---|
| Model | SD-605H-4 |
| Type | Wired Photoelectronic Smoke & Heat Detector |
| Operating Voltage | DC 9V ~ 35V |
| Standby Current | 80 µA |
| Alarm Current | ≤ 40 mA |
| Alarm Indication | Red LED |
| Reset | Power off or auto reset |
| Operating Temperature | -10°C to +50°C |
| Operating Humidity | ≤ 95% RH |
| Alarm Output | Remote LED for 2 wires; relay output for 4 wires |
| Smoke Sensitivity | 0.08-0.16 dB/m (±0.1 dB/m) |
| Alarm Temperature | 57°C |
| Standard | EN54-7:2008 |
| Dimensions | Ø99 x 60.5 mm |


















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