ECM142 Series uses ECM advanced technology, passed the CE certification,with premium speed control 0-10 vdc and PWM,we have 5 speeds available which implement high efficiency and save energy.Also we have constant torque or constand speed options,CW/CCW reversible that achieved reliable operation and smooth start and stop.Its permanet magnet, integrated controller,PFC version of controller available(Optional) make 142 low noise, mute operation and keep the cost down,especially own over/under current/voltage protection, blocking protection,1.5 times over-load protection,142 provide maintenance-free and long service life,widely applications in VAV, FCU, AHU, HRU, ERU, etc.