5 in 1 Soil Moisture Sensor Meter Tester, TSV LCD Soil Monitor, Soil PH Humidity Temperature Light Tester Hygrometer for Garden, Farm, Lawn, Plant Indoor & Outdoor Care Tool - Walmart.com
Gravity: Analog Dissolved Oxygen Sensor/Meter Kit: Amazon.com: Industrial & Scientific
Dr.Meter Moisture Sensor Meter, Soil Water Monitor, Hydrometer for Plants Soil - Walmart.com
Gravity: Analog pH Sensor / Meter Pro Kit For Arduino — Arduino Online Shop
Apogee MQ-610 ePAR Meter + Wand
MINI 4 IFR | Infrared temperature meter with sensor - KOSO North America
Aroya SOLUS EC Meter. 3 in 1 Soil Moisture, EC and Temp Sensor For Grow Mediums
Flow Sensors / Flow Meters | KEYENCE America
Amazon.com: DIGITEN Water Flow Control LCD Display+1/2"Flow Sensor Meter+1/2"Solenoid Valve+12V Power : Industrial & Scientific
SMART SENSOR Handheld Carbon Monoxide Meter with High Precision CO Gas Tester Monitor Detector Gauge LCD Display Sound and Light Alarm 0-1000ppm - Walmart.com
FP5100-5300-Series | Paddlewheel Flow Sensors | Omega Engineering
Gravity: Analog TDS Sensor for Arduino | Total Dissolved Solids Meter | Water Quality Sensor Compatible with Arduino: Amazon.com: Industrial & Scientific
SMART SENSOR Handheld Carbon Monoxide Meter with High Precision CO Gas Tester Monitor Detector Gauge LCD Display Sound and Light Alarm 0-1000ppm - Walmart.com
MO-200 Oxygen Meter | Apogee Instruments
Amazon.com: DIGITEN 4 Digital Green LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN for Lathe Conveyor Belt : Industrial & Scientific
Liquid Flow Meter - Brass 1/2 Nominal Threaded : ID 833 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits
COTK-57 Digital Carbon Dioxide (CO2) Temperature Humidity Meter 9999ppm NDIR Sensor IAQ Tester - Tekcoplus Ltd.
DIGITEN 1/4 Quick Connect 0.3-10L/min Water Hall Effect Flow Sensor Me
MQ-200 Quantum Separate Sensor with Handheld Meter – Hort Americas
G1/2" Flow Rate Water Sensor Meter+LCD Digital Display Control Total Litres Hall
Digital Humidity & Temperature Meter ,w/ Type K Thermocouple Sensor – Gain Express
DIGITEN G1/2" Water Flow Hall Sensor Switch Flow Meter Flowmeter Counter 1-30L/min: Amazon.com: Industrial & Scientific
DFR0300-H - Gravity: Analog Electrical Conductivity Sensor - DFRobot
