Microfire LLC products

An electrically isolated I2C sensor that can read an electrical conductivity probe, specifically geared for hydroponics or drinking water quality analysis. It measures the conductivity of a solution and converts it into Siemens (S), total dissolved solids and salinity. The firmware allows for single or dual-point calibration with temperature compensation. There is a connector available to use a waterproof temperature sensor for temperature compensation.

An I2C sensor that can read a pH probe. Attach a waterproof temperature sensor for temperature compensation with the attached connector. The firmware on the device provides two calibration options, single or dual point. The board uses the Qwiic Connect System, an easy-to-use, polarized, push-to-fit connector. No more mistaken connections or soldering header pins. Adafruit calls these connectors STEMMA QT. All boards have a conformal coating to help protect against moisture, corrosion, and short circuits.

An I2C sensor that can read an ORP probe. The firmware on the device provides two calibration options, single or dual point. The board uses the Qwiic Connect System, an easy-to-use, polarized, push-to-fit connector. No more mistaken connections or soldering header pins. Adafruit calls these connectors STEMMA QT. All boards have a conformal coating to help protect against moisture, corrosion, and short circuits.

The light-use SHT20 sensor comes in a plastic enclosure with a 1m length of cable. The Weatherproof version is housed in a sintered metal enclosure to provide weather resistance. The board uses the Qwiic Connect System, an easy-to-use, polarized, push-to-fit connector. No more mistaken connections or soldering header pins. Adafruit calls these connectors STEMMA QT.

Measuring Range: 0.5 - 12.0 mS/cm². Working Temperature: 5 - 60 °C (41 - 150 °F). Body Material: plastic. Electrode Material: 316L stainless steel. Cell Constant: 1.0 ±0.2. Connector: BNC. Cable length: 3 m. Dimensions: 12x155 mm. Cell-constant: K1 which is appropriate for mid-range EC measurements (hydroponics, pool or spa monitoring). Constant Immersion: yes. Ruggedized: yes, suited for industrial applications. Threading: 3/4 NPT on bottom for easy installation. Lifespan: Approximately 1 year under hydroponic use.

Measuring Range: 0 - 14 pH. Working Temperature: 0 - 80 °C (32 - 176 °F). Body Material: plastic. Refillable: no. Theoretical slope: 98% @ 25 °C. Zero Point: 7 ±0.25 pH at 25 °C. Impedance: 200MΩ @ 25 °C. Response Time: ~7 s. Alkaline Error: < 15 mV @ 25 °C. Connector: BNC. Cable length: 3 m. Dimensions:: 12x165 mm. Constant Immersion: yes. Ruggedized: yes, suited for industrial applications. Threading: 3/4 NPT on top and bottom for easy installation. Lifespan: Approximately 1 year under hydroponic use.. 

Measuring Range: 0.5 - 12.0 mS/cm². . Working Temperature: 5 - 60 °C (41 - 150 °F). . Body Material: glass.  Electrode Material: black platinum.  Cell Constant: 1.0 ±0.2. . Connector: BNC. . Cable length: 1 m. . Dimensions: 12x155 mm. . Cell-constant: K1 which is appropriate for mid-range EC measurements (hydroponics, pool or spa monitoring). . Constant Immersion: no.  Ruggedized: no, suited for lab or desktop applications.  Threading: none.  

Working Temperature: 5 - 60 °C (41 - 150 °F). Resolution: 12 bit. Power Supply: 3.0 - 5.5 V. Accuracy: ±2% °C. Interface: 1-Wire. Cable length: 1 or 3 m. Connector: 3 pin JST. Threading: 1 inch NPT for easy installation.

Connect a Qwiic connector to a: Female headers: these have a qwiic connector on one side and pins on the other. Male headers: these have a qwiic connector on one side and slots on the other. Qwiic connector: A Qwiic to Qwiic connector.