  It is well known that for the pure standard model triplet fermionic WIMP-type
dark matter (DM), the relic density is satisfied around 2 TeV. For such a heavy
mass particle, the production cross-section at 13 TeV run of LHC will be very
small. Extending the model further with a singlet fermion and a triplet scalar,
DM relic density can be satisfied for even much lower masses. The lower mass DM
can be copiously produced at LHC and hence the model can be tested at collider.
For the present model we have studied the multi jet ($\geq 2\,j$) + missing
energy ($\cancel{E}_{T}$) signal and show that this can be detected in the near
future of the LHC 13 TeV run. We also predict that the present model is
testable by the earth based DM direct detection experiments like Xenon-1T and
in future by Darwin.
