Delmhorst H-4 Handle for Prods SpongeCo and the distributor description supports

and the distributor description supports that

at full airflow

Thermo-hygrometer with relative humidity sensor:

and replacing one without the other means doing the job twice

Delmhorst H-4 Handle for Prods SpongeCo and the distributor description supportsElectrode handle for Delmhorst prods The handle that the 830 series coaxial prods and the 831 and 832 pin prods mount into. Delmhorst supplies the prods and the handle separately the prod on its own cannot be connected to a meter. Fitment Required for the Delmhorst 830 series coaxial prods Required for the Delmhorst 831 pin prod Required for the Delmhorst 832 pin prod Specifications Model H 4 Function Handle for 830 series coaxial prods and 831 832