The Trillium 120P is a compact portable sensor offering superior broadband performance over a wide temperature range. Instrument self-noise is within 4 dB of the NLNM (New Low Noise Model) at 100 seconds and below the NLNM up to 10Hz.  The very low self-noise of the Trillium 120P makes it ideal for local, regional and teleseismic studies in both observatory and portable applications. Portable network users will appreciate the low power consumption and reliable operation over a temperature range of ±45ºC without re-centering.

This instrument incorporates the same symmetric tri-axial design and suspension system as the highly successful Trillium 40. The design employs fewer parts than traditional sensors and offers improved temperature stability. The robustness and reliability of the mechanical suspension is well proven. With more than 500 Trillium 40 units operating in the field, there have been no mechanical failures.