Welcome to our store! RTU5034 GSM Relay Controller is an advanced mobile-controlled door opener and an ideal choice for automatic door openers. With this controller, you can use your mobile phone to remotely open or close the door lock anytime, anywhere, significantly improving the convenience and intelligence of your access system. It supports GSM networks, ensuring a stable and reliable remote control experience. Additionally, it has multiple security features to guarantee safe and reliable operation of your access system. It's the ideal choice for intelligent management of your home or commercial premises. Product Features: 1. Advanced RTU5034 GSM Relay Controller enables remote door control via mobile phone. 2. The automatic door opener function enhances the convenience and intelligence of your access system. 3. Supports GSM network for a stable and reliable remote control experience. 4. Multiple security features ensure safe and reliable operation of your access system. 5. Ideal choice for intelligent management of home or commercial premises. 100% Satisfaction: Our customers are our top priority. If you find any product issues after receiving the items, such as damage or incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.