Enviro Controller High Humidity Replacement Probe is designed for very high humidity conditions (80% plus). 5m long,  with a very special lacquered coating so they're way more water resistant. These are used in high-end mushroom farms and has been tested to destruction by the manufacturers and always dries back.  They've dunked it in water, it'l then dry back and start working again. 

This is a probe compatible for Enviro or IHC controllers that have the external plug n play port.

So, who is this probe for:

• if you have your probes above / near a humdifier 
• if you haven't covered your probes during foliar spraying
• if you like to give your probes a bath now and again for whatever reason
• if you work with people who have a tendency to do any of the above

If you're careful with the standard probes, you're golden. If you want something that is near impossible to drown/kill, then this is the one. These new probes have been tested in high humidity environment.