The equivalent of the Taylor K2006 is the Leslie's
Chlorine FAS-DPD Service Test Kit from Lesliepool.com
It uses Taylor reagents and is re-branded for Leslie.

Whatever kit you use must have the FAS-DPD Chlorine test, not the DPD or OTO Chlorine test. Both Taylor and Leslie's sell the individual salt test kit too, again, both made by Taylor and re-branded for Leslie's.

Just alternatives.