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Wireless Interconnected Smoke Detector

The HM-620PHW-AC wireless interconnected smoke detector works on AC power. It has the built-in receiving and transmitting modules. After being triggered to alarm, the product would send the alarm signal to other products in the interconnection group in wireless mode, forming the interconnected alarm. With the plug-in type terminal block design available at the bottom, the wiring is very simple and convenient.

The wireless interconnected smoke detector adopts the unique structural design, and utilizes MCU to make intelligent processing to the photoelectric signal. It is provided with the characteristics of dust resistance, pest immunity, and anti light interference. The stability of the product is guaranteed from the design aspect. At the meantime, the product is highlighted by the wireless interconnection function. It is suitable for various needs of installation environment, and raises the perception of the user to the alarm signal.

The product also performs excellently in reaction to the visible smoke generated by slow smoldering or the flame combustion. It is applicable for installation in residential area, factory building, shopping mall, hotel, office building, teaching building, bank, and other places for fire alarm.

Working Principle
The wireless interconnected smoke detector mainly takes usage of the principle of the particle in the smoke refracting the infrared light. The circuit is primarily composed of infrared transmitting part, receiving part and MCU processing part. The transmitting tube and the receiving tube are all placed in the optical chamber which can shield the interference from the external stray light but won't affect the entry of the smoke.

In the absence of smoke, the product only receives very weak infrared light. When there is the smoke in the optical chamber, the received optical signal is strengthened because of the scattering effect. When the smoke concentration reaches to a certain level and is analyzed via the MCU to achieve the alarm threshold, the alarm indicator of the product would flash. The product also emits the harsh alarm sound, and sends the alarm signal to other interconnected products and fire alarm control panel.

The wireless interconnection range of the wireless interconnected smoke detector is 200m in open space. Therefore, within the range of 200m in open space, one product raising the alarm would set off the alarm of all other products within the range.

Technical Specification
Operating Voltage AC110V/ AC200-240V (9V Backup Battery)
Quiescent Current <25uA
Alarm Current < 35mA
Battery Life About 1 Year (Lithium Battery)
Alarm Indication Infrared LED Flashing
Alarm Sound Pressure ≥85dB/3m
Wireless Transmitting and Receiving Frequency 433MHz
Transmitting Distance 200m (Open Space)
Working Temperature -10℃ ~ +50℃
Relative Humidity ≤95% RH
Overall Dimension Φ128×38mm
Executive Standard GB4715-2005, EN14604, UL217
Detection Zone 80m² for General Place Needing Protection When the Space Height is 6m to 12m
60m² When the Space Height is below 6m

Related Names
Intelligent Fire Alarm | Monitored Smoke Detector | Photoelectric Fire Detector

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