Dramm Microfan Thermostat - Two Stage

Dramm Microfan Thermostat, Two Stage — Independent Control of Two Circuits

The Dramm Microfan Two-Stage Thermostat delivers durable, precise mechanical temperature control for greenhouses, grow rooms, warehouses, farms, and industrial environments. The two-stage configuration provides independent control of two circuits at different temperature set points, allowing simultaneous management of heating and cooling or ventilation equipment as temperatures rise and fall. Built to replace rusted metal boxes with unreliable hand-marked calibrations, it features a sealed PVC housing and stainless steel coiled sensor that withstand rough, humid environments while maintaining accuracy to 1 degree Celsius.

An SPDT switch contact configuration supports both normally-open and normally-closed wiring for maximum installation flexibility, and CSA approval provides confidence for use in commercial, agricultural, and industrial applications requiring certified electrical components.

Key Features & Benefits

• Two-stage control: Independently controls two circuits at two different temperature set points, enabling simultaneous heating and cooling or ventilation management.
• Sealed PVC housing: Corrosion-resistant enclosure protects internal components from moisture, fertilizer, and chemical exposure common in greenhouse and grow room environments.
• Stainless steel coiled sensor: Durable sensor material resists corrosion and maintains accurate temperature reading over long service life in humid conditions.
• 1 degree Celsius accuracy: High-precision temperature sensing ensures equipment activates and deactivates at the intended set points without large deviations that waste energy or stress plants.
• CSA approved: Safety certification provides confidence for use in commercial, agricultural, and industrial applications requiring certified electrical components.

Who Should Use This

Greenhouse operators, commercial cultivators, and facility managers who need reliable mechanical thermostat control for temperature-triggered equipment are the direct fit for the Microfan thermostat. The ruggedized design is well suited for humid growing environments where electronic thermostats may be susceptible to moisture damage.

About Dramm

Dramm Corporation has manufactured environmental control hardware from its Manitowoc, Wisconsin facility alongside its watering and spray equipment lines, building the Microfan thermostat to replace rusted metal boxes and unreliable hand-marked dial calibrations found on older greenhouse equipment.

Frequently Asked Questions

What is the difference between single-stage and two-stage thermostats?

A single-stage thermostat controls one circuit at one temperature set point, such as turning on a fan when temperature rises above a set value. A two-stage thermostat controls two independent circuits at two different set points, such as activating ventilation at one temperature and cooling at a higher one, providing more nuanced environmental management.

Is the Dramm thermostat suitable for humid greenhouse environments?

Yes. The sealed PVC housing and stainless steel coiled sensor are specifically designed to withstand the high humidity, condensation, and occasional chemical spray exposure typical of greenhouse and grow room environments.

How is this thermostat wired into existing equipment?

The SPDT switch configuration supports flexible wiring for both normally-open and normally-closed applications. Consult the Dramm installation guide for wiring diagrams and have the installation performed by a qualified electrician if required by local code.

Can the Dramm thermostat control both heating and cooling equipment?

Yes. The two-stage thermostat controls a heating circuit and a cooling circuit at independent temperature set points, making it well suited to year-round environmental management in greenhouses.