1. Up and down movements to prevent the parking spaces are occupied. 
 2. To some extent prevent vehicle theft. 
 3. Design generous and strong. 
 4. Smart circuit, misuse error correction. 
 5. Rising obstacles encountered automatic return. 
 6. Down obstacles automatically stop the alarm event. 
 7. Voltage: DC12V 
 8. Battery: 12V 7AH 
 9. Remote control distance: ≥ 30 m 
 10. Running time :3-5S 
 11. Use of ambient temperature -40-60 ℃ 
 12. Weight: 15KG 
 13. Under pressure: 5t