Technical parameter: TUV, CE, EN61058 FA2-4/1BEK, FA2-4/1BEK-1, FA2-4/1BE 4, 3A 250V~5E4 CQC, GB15092 FA2-4/1BEK, FA2-4/1BEK-1, FA2-4/1BE 4, 3A 250V~5E4 Main characteristics: Single-pole NO speed regulation control With close locking With forward & reversal rotation device With speed adjustable knob Optional output waveform:half wave or full wave. With dustproof function Single-speed and double-speed are optional Mechanical life:more than 1E5 times. Cartons.