The Metabo 343084840 is a replacement electronic control unit (230V, 50/60Hz) used to regulate the speed, torque, and power delivery in specific Metabo power tool, including :
Metabo BEV 1300-2: Two-speed rotary drills
Metabo SBEV 1100-2 S: Two-speed impact drills
Metabo SBEV 1300-2: High-torque impact drills