1. Prevent false alarm due to water vapor.
2. No contact eliminates false alarm.
3. Adaptive manual intelligent judgement.
4. No need special pipe/wire for network linkage.
5. Not only support real-time(<5S) wireless communication linkage alarm. But also support national fire cloud system.
6. Independent intellectual property rights, save-energy communication protocol, malfunction&low power mention. Device-malfunction feedback within 300s. Monitoring every day and night.
