1" Wired Irrigation Flow Meter Pulse Sensor, 1004-EX, Compatible with Rachio Gen 3, Rachio Pro Series, and Spruce Smart Controllers | Backyard Landscape Supply
DIGITEN G1/2" Water Flow Hall Sensor Switch Flow Meter 1-30L/min
G1" Water Flow Sensor, Male Thread Brass Hall Effect Sensor Flow Meter 2~50L/MIN, DC 24V Powered Flowmeter Counter for Arduino, for Raspberry Pi for Reverse Osmosis: Amazon.com: Industrial & Scientific
Amazon.com: DIGITEN G3/8 Water Flow Sensor Witch, Hall Effect Flowmeter Liquid Fluid Meter Sensor Switch Flowmeter Meter 0.3-10L/min : Industrial & Scientific
Liquid Flow Meter - Plastic 1/2 NPS Threaded : ID 828 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
1" NPT Hall Sensor Flow Meter - Leridian Dynamics
Liquid Flow Meter - Brass 1/2 Nominal Threaded : ID 833 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits
DIGITEN G3/4" Water Flow Sensor, Food-Grade Hall Effect Sensor Flow Meter Flowmeter Counter 1-60L/min - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible: Amazon.com: Industrial & Scientific
Liquid Measurement Sensor | Haihuilai Meter Sensor | Signal Flow Meter | Pulse Flow Meter - Flow Sensors - Aliexpress
DIGITEN G3/8" Water Flow Sensor, Hall Effect Sensor Food-Grade Flow Meter Flowmeter Counter 0.3-10L/min - Arduino, Raspberry Pi, and Reverse Osmosis Filter Compatible: Amazon.com: Industrial & Scientific