Features: This product has remote control function, convenient to use. It is only applicable to draught fan and air conditioner motor of 380VAC(single-phase input, 3-phase output). It supports input power supply voltage of single-phase 380VAC 5%, and output power supply voltage of 3-phase 380VAC. 0-50Hz frequency control, it supports stepless speed regulation of draught fan motors, draught fans have air blowing-in and blowing-out function. It has over-current, short circuit, over-voltage, under-voltage, and overheating protection functions. Specification: Name: Variable-frequence speed controller for draught fans, air conditioners, motors Model: JFD Matching motor power: 0.75 KW / 1.1 KW / 1.5 KW / 2.2KW(Optional) Application: Draught fans, air conditioners, motors Power supply phase number: Single phase Rated voltage: Single-phase 380VAC Output voltage regulation mode: PWM control Shell material: Flame-retardant plastic Remote control battery type: Two AAA batteries (NOT included) Size: 160 * 120 * 95mm / 6.3 * 4.7 * 3.7in Installation method: Wall-mounted Installation site: Indoor (less than 1 km altitude, no dust, no corrosive gas and no direct sunlight). Applicable environment: -10 ~ +40--20% ~ 90% RH (no condensation) Vibration: Less than 0.5g Protection grade: IP20 Cooling mode: Forced air cooling Package list: 1 * Controller 1 * Remote 1 * User Manual Package List 1This product has remote control function, convenient to use. 2It is only applicable to draught fan and air conditioner motor of 380VAC(single-phase input, 3-phase output). 3It supports input power supply voltage of single-phase 380VAC 5%, and output power supply voltage of 3-phase 380VAC. 40-50Hz frequency control, it supports stepless speed regulation of draught fan motors, draught fans have air blowing-in and blowing-out function. 5It has over-current, short circuit, over-voltage, under-voltage, and overheating protection functions.