Control 4 fans, 230VAC or 48VDC input, fan speed control by 0-10V/PWM signal, over temperature and fan failure alarm

This fan contrommer are widely used for Telecom Outer cabinet heat exchanger and air conditioner system. 

Two fans can be controled at a timeFan 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°C Rated Voltage: 24V~48V DCOperating Voltage: 36V~57V DCMax Load Current: 5.0A per fanTachometer Output: Open collector, 4 pulses/RevTachometer Output Current: Max 20mAAlarm Output: Fan ailure alarm and over temperature alarmAlarm Output Current: Max 20mADigital Display Screen: Instant ambient operating temperatureFan operationg status and speedLife Expectance: 50,000 hours  

Telecom outdoor cabinet Brushless DC fan controller with temperature sensor and alarm signal