Frequently asked questions

Sprite is designed for indoor use only. For outdoor use, you will need an enclosure to cover both the controller and the power adaptor. Netro does not manufacture or sell these enclosures but you can find them by searching for "sprinkler controller enclosure" on Amazon.
Sprite comes with its own power adaptor which we recommend to use. If you prefer to use your old power adaptor which has a ground wire, you can leave the ground wire open.
The P/MV wire is for your master valve and should be connect to the "M" slot in Sprite.
Some sprinkler systems with large number of valves have two common wires. If your sprinkler system has only one common wire, you can connect it to either one of the "C" slots and the other "C" slot will sit empty.
No. Sprite works with your existing sprinklers (the pumps, pipes and nozzles). You just need to replace or install the controller.
The Netro app is capable of managing multiple controllers. You can link two controllers together. You will need to have at least two "common" wires so that each controller gets one. If there is only one "common" wire, it needs to be connected to both controllers by using a wire splitter.
You just need to add the device in the same way in the Netro app, and once it is setup, there will be a dropdown menu on the home page where you can navigate between the two controllers.

Wi-Fi connection
Sprite will re-connect to the Wi-Fi automatically after a power outage. Also, all the zone settings and watering schedules are saved on the cloud server, so you will not lose anything.
Sprite will continue to execute the pre-loaded schedules for up to one month.
Yes, as long as your phone/tablet has access to the internet, you can control and monitor your Sprite.

Testing sprinklers
There are two ways to test your sprinklers after installing Sprite:
You can create an account and connect Sprite to your home Wi-Fi, then you can use the 'remote control' feature on the Netro app to turn on and off the zones instantly.
If you just moved into a house and possibly have not installed the router, this mode might work well for you: Download the Netro app and use the "Test run" feature on the login page. In this way you do not need to have a home Wi-Fi or create a Netro account. Your phone is directly connecting to the Wi-Fi network hosted by the Sprite. This mode allows you to turn on and off the zones without involving the Netro cloud server.

Zone configuration
The area of each station(zone) does not affect the watering schedules at all. Netro uses the area only for computing how much water has been used and saved. The watering durations are calculated based on the irrigation rate of the sprinkler type (for example, a spray head can irrigate 1.5 inches per hour). Larger zone requires more sprinklers for covering the whole zone and thus consumes more water even though the watering duration is the same.

Watering schedules
Yes. There are three ways to create a schedule:
1. Enable smart zone for automatic schedules (weather based).
2. Add user programs for fixed schedule (cycle based), for example, once every 5 days or every Tuesday and Friday.
3. Manually turn on and off the sprinkler using the remote control feature.
When "Smart Zone" is enabled, Netro will automatically skip the fixed programs in case of significant rain or low temperature in order to save water and protect your sprinkler system. You can disable "Smart Zone" if you do not want any watering intelligence.  
Netro's algorithm is based on expert gardening knowledges, one of which is to avoid watering equally everyday. Netro waters your garden only when the soil is dry enough in order to draw more oxygen into the roots, leading to a lusher landscape. By default, we allow the moisture level to deplete to 50% (recommended by EPA) before next watering. If your zone grows shrubs or trees which typically have longer roots than grass and absorb water from deeper soil, it takes more days for the moisture level to drop to 50%. To refill the soil moisture up to 100%, it takes longer time running the sprinklers too.  
These scientific smart schedules tend to water less often and more deeply. Customers can customize their watering solution by adjusting the watering duration and frequency in settings->zones->preferences.
Netro tries to water in the early morning when evaporation is minimal and water pressure is higher. Netro minimizes watering in the middle of a day because the sun will evaporate water before it can soak into the soil. Netro also safeguards your plants and your sprinkler system. Watering will automatically be disabled when temperatures are very high to protect your plants and eliminates night watering, frequently the cause of soggy lawns which attract disease. The winterization feature disables watering during cold temperatures entirely.
We don't have that control so far but will likely to add that in a future release of the app. For now you can add a restriction to prevent watering between say 7am to 10pm. This will force the smart watering to be done before 7am which means it has to start around 4am. You might want to tune it a little bit because it depends on number of zones and other settings.
Go to schedules, select a day, select a schedule, tap the "gear" button on the right, then a menu will pop up from the bottom where you can skip this specific schedule or all the schedules on that day (do not water today).
You probably selected clay or clay loam as the soil type which accepts water slowly, often as little as 1/4 inch per hour and that is why we break the watering into many pieces to avoid water runoff.

Watering regulations
Netro collects water regulations from governments and water companies, and automatically applies those regulations for you based on your address, e.g. zipcode, city.
As this feature is in Beta version, our database may not be able to cover all areas and all rules. You are welcome to report missing regulations to our systems and we will manually apply them to your account and also the users in your neighborhood. You can always add your own restrictions in settings->restrictions.

Weather data
We get weather data from our service provider, which may have different results from other sources. Even with the best forecast possible, it will never match the actual rainfall. Therefore, we update our data nightly to use an actual rainfall data source for the previous day. That way it will not vary too far by a bad forecast or sudden change in weather.
Netro's weather data is based on your address. We obtain weather data from world’s leading provider which monitors the weather conditions for any place specified by the exact latitude and longitude. The service provider collects raw data from many sources, including all major weather stations nearby, and uses professional models to predict weather for your address. Typically, the weather data used by Netro is more accurate than the data from just one single weather station.

Cloud services
All the settings and watering schedules are saved in the cloud. Sprite does have a battery but that is only for resuming the system clock.

Sprite is not designed to support the traditional rain sensors because those rain sensors does not forecast rainfalls. For example, you usually do not need to water your lawn if the rain is coming tomorrow but your rain sensors will not tell you that. Netro is with more advanced technologies including real-time weather information to be aware of the rainfall in the past and also in the future. For even more accurate watering schedules, Netro offers wireless moisture sensors which measures exactly how much water your plants need. We believe those innovations that Netro is built with are changing the way of home irrigation.
Sprite works without the Whisperer sensors. It uses the weather information and advanced watering algorithms to automate the irrigation.
Whisperer is an independent product which does not require the Sprite controller to collect data. You can add as many sensors as possible in your Netro app. You can use this solar-powered sensor to monitor your plants remotely, even if you do not have a sprinkler system. When the water, temperature or light levels of your plants need special attention, the Netro App will alert you.
Whisperer is able to store 128 data samples. It will keep all the data until it has access to the internet and upload the data to the cloud server. Actually you will be able to change the frequency of reading, from once every 15 minutes to once every day.

Connected-home platform
Currently we are focusing on voice control through Alexa and Google Home. We do have a plan to support IoT platforms likes IFTTT and Wink but it will probably be late 2017. We hope you also like the Netro app for which we are adding more products (for example the smart plant sensor and the smart hose faucet timer).

It is possible that your Wi-Fi network is running on an old router which is using the legacy encryption mode: WEP. Currently Sprite is only compatible with Wi-Fi networks secured by WPA. The WEP encryption is weak which can be broken easily. You want to be aware of this and turn directly to WPA, a stronger encryption mode. If you are not familiar with setting up the Wi-Fi routers, Please refer to this article:

It is also possible that your router is an old one and runs on Wireless-B(11Mbps). Sprite only supports the newer standards, namely Wireless-N, Wireless-G and Wireless-AC. We also found that if the SSID (name of your home Wi-Fi) contains special characters like spaces or quotation marks, Sprite might have difficulties in connecting to it.
That means Sprite has connected to your router but it has no access to the internet. It will disconnect from your router and change back to its host mode in a few seconds. Please check your router and make sure it is connected to internet.
Please press the RST button, make sure Sprite is in host mode and the LED is blinking slowly (once per second).
Please make sure your router is turned on and has a signal of at least 2 bars on your phone at the location where your device is installed.
Please check the wires. Are they loose or disconnected from the slots? Please also check the common wires and the master valve if you have one. If you believe the wires are correctly installed, you might want to check whether there are shorted zones or open zones. You just need to use a multimeter to measure the resistance between the common wire and each zone. The normal reading would be 20-60 Ohms. If the reading is less than 10 Ohms then you might have a shorted circuit in the solenoid and if it is larger than 80 Ohms you might have an open circuit.
If your app shows the device is offline, your Sprite is unable to connected to your home WiFi (possible causes: 1. your router is down; 2. Wi-Fi signal is weak; 3. the SSID/password is changed) or the router has no access to the internet. If your app shows the device is online, you do not need to do anything. There was a network glitch when the device tried to get the watering schedules from the cloud server. The light will be back to steady when it updates the schedules successfully in an hour.