•Two operational modes (addressable for the Digiplex EVO series or conventional relay operation)•Remote test mode when used with Test Trek V2•Full audio and infrasonic spectrum analysis•7 frequency digital filters, digital amplifier gain and frequency fluctuation assessment•Impact and shock wave analysis•High-immunity to RFI and EMI signals•Adjustable sensitivity: covers up to 9m (30ft) when set to high and up to 4.5m (15ft) when set to low•TestTrek (459) used for testing available separately•Anti-tamper switch