Microprocessor control operation by touch through front plate , digital display ,DC brushless motor , no carbon dust pollution , various rotors available for convenient operation. ◆ Electronic lock door for safe operation. ◆ The fruition of fast Acc and Dec , the fastest Acc time is 30s , the fastest Dec time is 28s ,Acc and Dec time can be set differently . ◆ The time can be set in seconds. ◆ The function of self-balance. ◆ RCF value can be calculated automatically. TECHNICAL PARAMETER: Model: L-550 Max speed: 5500r/min Max RCF: 5310xg Max Capacity: 1600ml (4x400ml) time pang: 0～99min59s The fast time of Acc/Dec: 28/30s Speed accuracy: ±30r/min Power supply: Ac220V 50Hz 6A Noise: ＜65dB(A) Dimension: 470x560x380mm (LxWxH) Weight: 42kg