Features: 1.The DC 6V current is 30mA, working condition is 0-40℃ and relative humidity is＜80% 2.You can control the flowing direction by the positive and negative connect 3.Silent work and low working noise, stable working performance and good working condition 4.Wide application,suitable for aquarium, chemicals, liquids, dosing additives 5.Good helper in gardening work, sturdy, durable and practical Specifications: Volts:DC 6V Current:200-300mA Working condition:0-40℃ Relative humidity ＜80% Flowing rate:20-60 ml/min Rotate Rate:0.1-60 rpm Weigh: 150g Size: Driver size:Dia.32 x Height 23(mm) Pump head size:Dia. 54 x Height 46(mm) Installation hole:47mm Flowing direction: you can control the flowing direction by the positive and negative connect Silent work Suitable for aquarium, chemicals, liquids, dosing additives Package Included: 1 x 6v Dc DIY Dosing Pump Peristaltic Dosing Head for Aquarium/chemical Lab Analytical Water Features Efficient 6V DC Power