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Home Safety High Sensitive Fire Warning Sensor

Brand new and high quality Suitable for testing the smoke of houses, shops, hotels, restaurants, office buildings, schools, banks, libraries, computer rooms and warehouses. Easy to install Material: ABS plastic Color: White Size (L x W x H): Approx. Φ107*35mm Voltage: DC 9V Standby Current: 10μA Alarm current: <15mA Relay Output: Normally open / closed; high / low level output Sensitivity: Adjustable Working Temperature: -10°C – +50°C Working humidity?≤95%RH Alarm mode: sound and light alarm / wireless output Transmission frequency: 315/433MHz Transmission distance: 80M Sound Level: ≥85