The AMFR-904 is an Auto Mains Failure Relay that offers excellent range of engine monitoring and protection features. This microprocessor-based controller includess 8 push-buttons, 19 LED lamps, 3-digits of 7segment LED display, 8 relay outputs, 9 digital inputs, 20 programmable parameters, Hour-meter and 2 operating modes. The module has been designed to monitor engine temperature, low oil pressure, fails to start, fails to stop, charge failure, over speed and under speed.