JOANLAB LCD Display Shaker Lab Multi-purpose Horizontal Swing Speed Oscillator Lab Adjustable Speed Laboratory Orbital ShakerSPECIFICATIONS Voltage Frequency: 100 240VAC 50 60HZ Timing range: 1min 19h59min Speed: 40 200rpm Size: 270*330*130mm Origin: Mainland China Orbital diameter: 20mm Model Number: os 20 Classification: Laboratory Thermostatic Devices Certification: CE Brand Name: JOANLAB Allowable relative humidity: 80% Allowable ambient temp range: 5 40