| Model | Temperature & Humidity range | Inside / Outside dimensions *(mm) |
| HSH-221 | -20 to 150C (-4 to +302F) / 30 to 95%rh | W300xH300xD250 / W440xH630xD695 |
| HSH-241 | -40 to 150C (-40 to +302F) / 30 to 95%rh |
| HSH-261 | -60 to 150C (-76 to +302F) / 30 to 95%rh | W300xH300xD250 / W440xH690xD785 |
| HSH-641 | -40 to 150C (-40 to +302F) / 30 to 95%rh | W400xH400xD400 / W540xH730xD920 |
| HSH-661 | -60 to 150C (-76 to +302F) / 30 to 95%rh |
| HSU-221 | -20 to 150C (-4 to +302F) | W300xH300xD250 / W440xH560xD695 |
| HSU-241 | -40 to 150C (-40 to +302F) |
| HSU-261 | -60 to 150C (-76 to +302F) | W300xH300xD250 / W440xH690xD785 |
| HSU-641 | -40 to 150C (-40 to +302F) | W400xH400xD400 / W540xH730xD920 |
| HSU-661 | -60 to 150C (-76 to +302F) |