Tachometer Output: Open collector, 4 pulses/Rev Tachometer Output Current: Max 20mA Alarm Output: Fan ailure & over temperature.

We design, develop and supply many kinds offan speed and temperature controller for telecommunication, heat exchanger, HVAC, etc.Size: 92x56.5mm

Weight:     42gTwo fans can be controled at a timeRated Voltage: 24V~48V DCOperating Voltage: 20V~56V DCMax Load Current: 5.0A per fanFan Start-up Temperature: Adjustable from 25°C to 30°CFan Full-speed Temperature: Adjustable from 35°C to 40°COver Temperature: Adjustable from 35°C to 55°CTachometer Output: Open collector, 4 pulses/RevTachometer Output Current: Max 20mAAlarm Output: Fan ailure alarm and over temperature alarm5V high-level output when alarmAlarm Output Current: Max 20mADigital Display Screen: Instant ambient operating temperatureFan operationg status and speedThermal Sensor Length: 800mmLife Expectance: 50,000 hours Princple and use instruction of our 2 fans type fan controller for example, we can customize the brushless DC / EC Fan and controller according to your requirements.    

PWM Variable speed fan speed control themostat