- Fully Enclosed, SPST, Snap-Acting, Dust-Proof Switch are Designed for Wall or Surface Duct Mounting
- H8909 and H46 Models Include Positive On-Off Settings Permit Manual Operation of Controlled Equipment
- H600 Models have a Removable Setting Knob Prevents Tampering
- Mechanical Humidity Controllers Provide Automatic Control of Humidifiers in Central Heating and Air Conditioning Systems