Control Resources TachScan-3 SmartFan alarm

Features

• SmartFan TachScan-3 is a digital fan speed alarm that monitors the tach pulses from up to three DC or AC fans or blowers and provides OR’d pass/fail signals. TachScan-3 is compatible with any fan that provides open collector or voltage source tach pulses. Three trigger speeds are selectable by jumper. If the speed of any air mover falls below the trigger speed, alarm signals are generated. Alarm signals can drive LEDs, logic, optical isolators or MOS Relays.