NMB Technologies R150G IP68 PWM Brushless DC Fans offer an IP68 rating per IEC 60529 standards and a fan active brake within 3s to 0RPM at 5% to 10% PWM input. The NMB Technologies fans provide dust-tight protection and safeguards against wet locations and powerful water jets. Other features include a three-phase DC brushless motor with PWM speed control, open collector tacho signal output for fan speed, and multiple motor protections. The precision-machined ball bearings deliver high reliability and long life of 70,000 hours at +40°C. The R150G IP68 PWM Brushless DC Fans operate in an ambient temperature range of -30°C to +50°C. Ideal applications include outdoor, factory automation, food processing, Inverters, telecom, and horticulture.