... weld. Beautiful design, antirust, durable. 2 the width of stainless steel box is 2mm 3 Reliable performance, rejecting personal interference, add ... equipment conveniently. 5 The whole equipment is designed with stainless steel and water proof. It is hard to be influenced by outside ... water.10 The master board has counter function, so if no body pass, it come back to the initial position. stainless steel ...