RN/RP - speed controller

LONGWELL is a manufacturer of HVAC fans, blowers , motors and components ,such as centrifugal fans, axial fans, cross flow fans, single/double forward curved fans ,AC/BLDC/ECM motors as well as industrial fan blowers ,established in 1990 ,equipped with high advanced testing and production facilities ,automatic welding machines , CNC machining centers ,injection machines . with over than 28 years manufacturing experiences , LONGWELL is very skilled in designing , developing and manufacturing ,and exporting to over 30 countries including many Fortune Global 500 customers in HVACR application . and products passed CCC,CE ,ETL and UL . LONGWELL EMC Technology is giving more energy saving to our world . the advantages are :1, Our ECM motorized fans'effiency are 30%-60% higher than the traditional motors .2,the build-in PCBA achieved stepless speed control,and communication with customers products . 3,longer life span up to 600,000hours . 4,IP55,IP68 can be customized .5, Sine wave ,three phase eliminate electromagnetic-acoustic and lots of other protection functions like soft start ,overload ,motor block ^ .LONGWELL has large products range which could offer customers a more perfectly products solutions by not only producing fans and motors ,but also do the perfectly motor and fans matching ,and offering good quality and very competitive prices by large scale productions .LONGWELL expects all our customers have their 100% satisfied solution in fans and motors . our mission is to offer the best fans and motors solutions to the customers in applications of Heating ,ventilation , and air conditioning ,home appliances , and air purifier , floor heating and many other industries . Welcome more customers from all walks of life to contact us for future business relationships mutual success . our joint venture will benefits both our parties . We supply the best products at the best prices to ensure our customers have everything they need to fit their budget, grow environment and personal style .