微电脑智能壁球发球机SS-B1-81专利产品，智能全遥控发球机2配置加热系统，交直流两用电源3正反手，中线、窄线发球功能4随机发球：12种模式自动变换发射5遥控发球方式：定点、随机、水平摆动、垂直摆动、高吊、上旋、下旋6可调速度范围30-150公里/小时，可调频率范围2-12秒7装球容量：50粒 SS-B1-81) Patented product, intelligent full remote control ball machine.2) Heating system, AC and DC power supply.3) Forehand and backhand, wide line, middle, narrow lines function.4) There are 12 kinds programs in the random mode and every program can change automatically .5) Remote serving modes: fixed, random, horizontal swing, vertical swing, lob, topspin, backspin.6)Ball speed range: 30-150 km / h, frequency range : 2-12 seconds7) Ball Capacity: 50.