This is a greater water meter. I added it to my well water line so I could see how much water was getting used every month. I can use that information to determine how much the pump runs and what the electricity cost is.

I have 2 complaints. 1) It doesn't come in 1 inch size and 2) it has the extra fittings that are required to be used because of the washers. I wanted to not use the extra fittings so I could avoid the rubber washers but the threads wouldn't fit an NTP fitting so I'm guessing it's just a straight thread which is difficult to locate.

The price is great for what you get and so far I am very happy with the purchase. I know that DAE wants to make cash by selling a complete system but for home use it's not such a great deal. However I have been able to interface with an ESP8266 running ESPhome. So far it just works and I get to see my water use in real time and verify by taking a look at the meter directly plus I no longer have to go out to the curb and lift a cover to see what my water usage is on a daily/weekly/whatever else basis. And since this meter does have the ability to be certified if there is ever a discrepancy between my utility bill and what I show to have used I can use it to prove I have not used as much water as I am being charged for.

For those interested in using ESPhome with this you will need a 10K pull up resistor installed on one leg of the wire lead for things to work properly then you simply short to ground for the count to work. The code I used for the sensor is included below and should work to get you up and running.

- platform: pulse_counter
pin:
number: GPIO14
inverted: true
mode:
input: true
pullup: true
name: "${disp_name} Flow"
unit_of_measurement: "gal/min"
icon: "mdi:water"
update_interval: 15s
accuracy_decimals: 0
internal_filter: 400ms
count_mode:
rising_edge: DISABLE
falling_edge: INCREMENT
filters:
- lambda: return (x);
total:
name: "Total Water Consumption"
unit_of_measurement: "gal"
device_class: water
state_class: total_increasing
accuracy_decimals: 0
icon: "mdi:faucet"

They also work without a monitor. Also I ordered a 3/4 inch and received a one inch. I had a problem with the readouts. I emailed the company. They answered promptly and did not stop until the perceived problem was completely solved. I am totally pleased.

The DAE AS200U-75P has proven to be an invaluable tool for monitoring and determining the optimal time to change my whole house water filter. With its user-friendly interface and reliable performance, this device simplifies the process of tracking the condition of the filter. By providing accurate measurements and clear indications, it helps me ensure that my water filtration system is operating at its best and that I'm getting clean and safe water throughout my home. Since it is my first set of filters, I have to see what happens at around 10K gallons of water. I can better gauge on when my next change should be.

Bought two of these to satisfy the local water dept. re monitoring irrigation. Easy to install and read. Only quibble is they are somewhat noisy when water is running. Wouldn't matter, except I installed one behind our bedroom, and it is noisy enough to wake us up when the sprinklers come on. Would recommend them anywhere except somewhere where the sound would matter.