1. Product Description: Remote Gate Opener Relay Switch GSM Automatic Access Controller Control your gates, doors, etc. with our GSM gate opener, designed for smooth communication and operation. Made of metal material, this device ensures durability and longevity. 2. Main Features: 3. Wide Compatibility: Compatible with DC 12V/1.5A power supply with a range of 9-24VDC and supports 3V SIM cards, making it suitable for a variety of applications. 4. GSM frequency: Equipped with 850/900/1800/1900MHz quad-band GSM frequency, ensuring global connectivity and reliable communication. 5. Advanced Relay Output: Equipped with 1 relay output with a rated output of 3A/220V AC, 7A/125V AC and 20A/14V DC, ideal for controlling a variety of devices. 6. Safety and Security: Includes anti-reverse design and supports 200 number groups for safe and efficient operation. 7. User-friendly interface: Allows easy operation and configuration via SMS, with functions such as parameter setting, user management and status query. 8. Compact and durable Design: Boasting a compact size of 90 x 70 x 27 mm / 3.5 x 2.8 x 1.1 inches, with IP30 protection and a metal housing, it is suitable for the industrial control field. 9. Wide range of applications