• Support voice control, compatible with Google Home and for Amazon Alexa
• It will send real-time message alerts to keep your home safe and secure at all times
• With 900mAh battery included, it provides 7 days of standby time and battery life of up to 6-8 months
• WiFi connection allows you to know the status of the door in time
• Through the mobile APP, the voltage can be displayed at any time
• No gateway required

Specification:

• Power supply: AAA battery
• Weight: about 45g