First, the technical characteristics: 
 1, is designed for heavier or span more large up / down hanging windows; 
 2, the largest chain in the thrust. 
 Lying on the window sill, installation, more hidden, simple; 
 Electronic trip buffer protection, so that more of the closing force of the windows; 
 5, can be two simultaneous connections, suitable for a greater span of windows open control. 

 Second, technical parameters: 
 1, the use of power: AC220V/0.2A, DC24V/1A 
 Power rating: 24W 
 3, the push and pull force: 450N, 600N 
 4, speed: 15mm / S 
 5 Protection Grade: IP22 
 6, travel Specifications: 300/400/500/650mm 
 7, the end of the trip: the electronic mode of 
 8, LA-400 host size: 510 * 50 * 40mm; anti-bend chain L * 17 * 16. 
 Window machine www.chinajjsd.com