Gear Motor GT50
                 
           Reversible gear motors to transmit rotary movements
      between 0 and 90 or 160,for actuation of gas and air vales,
      with voltage-free limit switches,automatic/manual operation,
      position feedback and externally readable position indicator,
      running time:3.7-214s

         反转齿轮马达行程0度-90度或0度-160度，驱动燃气和空气阀门，
      带无源限位开关，自动/手动控制(可选），带位置反馈和外部位置指示器，
      开启时间3.7-214秒
      GT 50-120T20
      GT 50-30T20
      GT 50-60T20
      GT 50-03T4

      E:4-20mA