  A Pulsational Pair-instability supernova (PPISN) evolves from a massive star
with a mass $\sim 80$ -- 140 $M_{\odot}$ which develops the electron-positron
pair-instability after the hydrostatic He-burning in the core has finished. In
[Leung et al., ApJ 887, 72 (2019)] (Paper I) we examined the evolutionary
tracks and the pulsational mass loss history of this class of stars. In this
paper, we analyze the thermodynamical history to explore the neutrino
observables of PPISNe. We compute the neutrino light curves and spectra during
pulsation. We study the detailed neutrino emission profiles of these stars.
Then, we estimate the expected neutrino detection count for different
terrestrial neutrino detectors including, e.g., KamLAND and Super-Kamiokande.
Finally, we compare the neutrino pattern of PPISN with other types of
supernovae based on a canonical 10 kt detector. The predicted neutrino signals
can provide the early warning for the telescopes to trace for the early time
optical signals. Implications of neutrino physics on the expected detection are
discussed.
