... 1 1/4" ,8mm,10mm, Electrical limit and machinery limit design, accurate position, avoid gear and switch. 2-way/3-way electric ... for 100,000 times.2. Electrical limit and machinery limit design,accurate position,avoid gear with switch.3. Multi-angle assembling, ... system,cooling/heating system,Low voltage plumbing system7.Multiple voltage and control mode, applicable to a variety of occasionsModel Number ...