1, the power supply voltage: 220V ± 22V, 50Hz ± 1Hz 2、Rated input power: 80VA 3、Traction total time: 0~60 minutes (adjustable) 2, traction force: 0 ~ 300N (adjustable) 3, traction stroke: 0 ~ 250mm 4, duration : 0 ~ 90S (adjustable) 5、Interval time: 0 ~ 9min (adjustable) 6, traction angle: 0 ~ 15 ° (adjustable) 7, Specifications: 2030mm * 600mm * 960mm ☆ Cervical traction chair by microcomputer automatic control. ☆ Traction force, duration, interval time can be adjusted and monitored arbitrarily. ☆ Cervical spine traction chair is controlled by force sensor. ☆ Traction force automatic compensation function ☆ Traction force over force protection; ☆ Adjustable traction angle of traction chair ☆ Five safety protection functions (with national qualification certificate) ☆ Cervical spine traction chair has emergency reset function. ☆ Automatic alarm function ☆ Chinese numerical display