
Patented Coal Mine Smart Bluetooth Electrical Valve Actuator with Ma Certificate. Patented Coal Mine Smart Actuator: Features patented design with Ma Certificate for safe coal mine operations. Multi-Protocol Bus Communication: Supports Modbus and Profibus with 485 interface for centralized control. Explosion-Proof Safety Certified: Meets ExdIIBT4 standards with mandatory mining safety and 3C certification. Flexible Power Supply Options: Compatible with AC380V/400V/415V/660V, AC220V/110V, and DC24V/48V/84V. Advanced Intelligent Control: Includes Bluetooth, wireless control, and non-intrusive parameter setting. Wide Temperature Range Operation: Standard -20 to +60 degrees Celsius, optional -40 to +70 degrees Celsius. IP65/IP67 Protection Rating: Dust and water resistant, with IP68 available for special orders. Comprehensive Safety Protections: Features overheat, stall, torque, and phase loss protection mechanisms.