Logistics:Check your parcel in http://www.yw56.com.cn/english/index.aspx     Note: When using a discharge resistor will be very hot， forbidden to touch， to avoid burns. Also， please do not put flammable when used on explosive objects， and do not in direct contact with the heat resistance of the desktop， so as not to scorch the desktop. 
 
Winding resistance may occur when heated white smoke or odor phenomenon， which is normal， ease of use
 
The new， no packaging
 
 
New products can freely switch with switch 1A/2A without welding， very convenient.
 
1A   Green Led
2A   Red Led