Radio transmission distance: 30-100 m in open area. Scope of application: suitable for garage doors, alarms, automatic doors, rolling doors, and similar systems. Battery: 12 V 27 A (type 27A). Code: Rolling code for enhanced security. Key benefits - Long-range remote operation from a distance, improving convenience. - Wide compatibility with common door and security systems (garage doors, alarms, automatic and rolling doors). - Rolling code protection reduces the risk of code capture or replay. - Standard battery type (12 V 27 A) allows easy replacement and maintenance. - Designed for reliable, stable performance in typical residential or light commercial setups. Use scenarios - Home: operate a garage door from the driveway or curb, without approaching the door. - Security system: integrate with an alarm or access control to trigger doors securely. - Small business: control automatic or rolling doors in offices, shops, or storage areas.