1The product has the functions of adjustable speed, CW/CCW, start and stop, foot switch, etc. 2The flowing rate of the pump can be adjusted by rotating the knob and the direction of pump transmission can be switched by the direction keys 3Meet the needs of two-way transmission of multiple flowing rates 4The pump tube is made of silicone/corrosion-resistant rubber material, durable to use 5The product has strong suction and is anti-corrosion which has long service lifeItem Type:Peristaltic PumpModel: AB26 machine Product Size: Approx. 140 x 99 x 122mm / 5.5 x 3.9 x 4.8in Pump Head Size: Approx. 77 x 68 x 24mm / 3 x 2.7 x 0.9in Weight: 1.2 kg / 2.6 lb(approx.) Motor Type: Stepper motor Pump Tube Material: Silicone tube / corrosion-resistant rubber tube (inner diameter 3-4.8mm) thickness (1-1.6mm) Function: Adjustable speed, CW/CCW, start and stop, foot switch1 x Peristaltic Pump1 x Power Plug1 x Hose1 x User ManualApplicable Environment: 1. The temperature is not more than 80%2. The environment temperature is not more than 50Applicable Medium: 1. pure water, weak acid and alkaline liquid2. 80-100mPa.s viscosity liquidNote On CW/CCW: Switch between CW/CCW at low speed