This servo can use both PWM and S-Bus signals and is quite fast. It can be programmed using the Corona CSBP-1 SBUS Servo Programming card. Superior Hobby Corona SB6033 digital rc helicopters / humanoid robot servo motor [SB6033] - Item No SB6033 Size 23.5*9.5*19.5(0.92*0.37*0.77) Weight 6.2g