Ultrasonic welded and excellent waterproof Available for any car and car alarm system Operates all doors (both locking or unlocking) with remote keyless control. For 2 door or 4 door lower case and uppercase Outside full 360? rotation available Compatible with remote security lock /unlock outputs Optional choices of single control and double control working Voltage:DC12V Flexible distance:20mm Static torsion: >3kg Longevity:100,000 times Working temperature:-30--65C