Tuya Wifi Intelligent Siren Sound Alarm Temperature Humidity Sensor APP Control Wireless Secure System WiFi USB Voice Control

Features:
APP sets the temperature and humidity alarm range in advance, detects changes in ambient temperature and humidity, exceeds the safety interval, and automatically alarms even in the absence of a network.
When the siren alarm triggered, it will make alarm with both 100dB voice prompts and quick flash strobe. 18 alarm sound ringtones optional, with colorful life.
Don't need home gateway, you can easily achieve the intelligent control of home appliances, simple operation, easy to use.
Powered by the included USB cable or back-up battery (not included). Helps keep your home Secure even if the electricity fails. It can linkage with other smarthome products, such as PIR sensors or door sensors, etc.
No matter how far away from home, the warmth of home is in hands. Making your home smarter. Compatible with Amazon Alexa and for Google Home IFTTT for voice control.