# Rachio Sprinkler Controller Models & Tech Specs > New to Rachio? It's a pleasure to have you with us! Not sure on which controller you own? Check out the pictures below to identify your controller, we have t... Source: https://support.rachio.com/en_us/rachio-sprinkler-controller-models-tech-specs-HyfTxF0YY Last updated: 2026-04-13T19:50:56.641Z ### New to Rachio? We're happy to have you here! Not sure which controller you have? Use the pictures below to identify your controller and view its technical specifications. ## **Contents** 1. [Rachio 3 & 3e](#section-1) 2. [Rachio 3 Pro Series](#section-2) 3. [Generation 2](#section-3) 4. [Generation 1](#section-4) # Rachio 3 & 3e ### ![](https://cdn.kustomerhostedcontent.com/media/5f775c7b7cad407e578daa84/ae1a9e50d19694b32d422082a45cd459.jpg) Rachio 3 Tech Specs  **What's in the Rachio 3 box?**  * Rachio 3 Smart Sprinkler Controller * Weight: 1.05 lbs * Dimensions: 9.1" x 5.5" x 1.4"  * Power Supply with 6-ft Cord * Mounting Hardware  * 4 screws (1-3/4" in length) * 4 drywall mounts (1/4" diameter) * Quick Start Guide ### **Rachio App Compatibility** * **Apple iOS:** The Rachio app requires a phone or tablet running iOS 16.0 or later. * **Android:** The Rachio app requires a phone or tablet running Android 8.0 or later. Please note: the Rachio mobile app is required to connect devices to Wi-Fi. ### **Wi-Fi Connection** * Requires a 2.4 or 5 GHz wireless network signal available at the installation location ### ### **Power Requirements**  The Rachio controller must be connected to the AC power adapter included. DC Transformers are not supported. * Power Supply: External Transformer. Replacement power supplies are available [here on Rachio.com](https://rachio.com/products/controller-power-supply/) * (6-ft cord - 2.1mm x 5.5mm Female barrel plug) * Transformer input: 120 VAC ~60Hz 300mA * Transformer output: 24 VAC 850mA (0.85 Amp) Zone output (24 VAC): Compatible with 24VAC Solenoids ### Wire Compatibility  Rachio 3 supports 14-22 gauge wires. ### Hardware Compatibility Rachio 3 is compatible with: * Master valve/pump relay * 3rd Party Sensors  * Rain Sensor: Wired & Wireless Normally Closed (NC) sensors * Soil Sensor: Wired & Wireless Normally Closed (NC) sensors * Wired flow sensor ([check compatibility](https://support.rachio.com/ryoUGYT4bg)) ### Integrations * Rachio 3 works with Amazon Alexa, Google Assistant, and others. ### Zones/Model Numbers * 4 zones (Model: 4ZULWC) * 6 zones (Model: 6ZULWC) * 8 zones (Model: 8ZULWC) * 12 zones (Model:12ZULWC) * 16 zones (Model: 16ZULWC) Model numbers may have additional letters depending on the model, such as Pro Series, which contains PS at the end, or BLI in the case of Indoor Pro Series (that does not contain the weatherproof enclosure), or USI. ### Warranty  * 2-year limited warranty. ### **Optional Outdoor Enclosure**  Outdoor installations require an outdoor enclosure to protect your controller.  * Compatible with [Rachio Outdoor Enclosure](https://rachio.com/waterproof-enclosure/)   * Operating temperature: -13°F to 140°F * * * # Rachio 3 Pro Series ![](https://cdn.kustomerhostedcontent.com/media/5f775c7b7cad407e578daa84/609674f6980ba483238f0364fb69656c.webp) ### Rachio 3 Pro Series Tech Specs **What's in the Rachio 3 box?**  * Rachio 3 Smart Sprinkler Controller * Weight: 1.05 lbs * Dimensions: 9.1" x 5.5" x 1.4"  * Power Supply with 6-ft Cord * Mounting Hardware  * 4 screws (1-3/4" in length) * 4 drywall mounts (1/4" diameter) * Quick Start Guide ### **Rachio App Compatibility** * **Apple iOS:** The Rachio app requires a phone or tablet running iOS 16.0 or later. * **Android:** The Rachio app requires a phone or tablet running Android 8.0 or later. Please note: the Rachio mobile app is required to connect devices to Wi-Fi. ### **Wi-Fi Connection** * Requires a 2.4 or 5 GHz wireless network signal available at the installation location ### ### **Power Requirements**  The Rachio controller must be connected to the AC power adapter included. DC Transformers are not supported. * Power Supply: External Transformer. Replacement power supplies are available [here on Rachio.com](https://rachio.com/products/controller-power-supply/) * (6-ft cord - 2.1mm x 5.5mm Female barrel plug) * Transformer input: 120 VAC ~60Hz 300mA * Transformer output: 24 VAC 850mA (0.85 Amp) Zone output (24 VAC): Compatible with 24VAC Solenoids ### **Wire Compatibility**  Metal Terminals - Screw terminals for thicker wires.  ### **Hardware Compatibility** Rachio 3 is compatible with: * Master valve/pump relay * 3rd Party Sensors  * Rain Sensor: Wired & Wireless Normally Closed (NC) sensors * Soil Sensor: Wired & Wireless Normally Closed (NC) sensors * Wired flow sensor ([check compatibility](https://support.rachio.com/ryoUGYT4bg)) ### **Integrations** * Rachio 3 works with Amazon Alexa, Google Assistant, and others. ### **Zones/Model Numbers** * 8 zones (Model: 8ZULWC) * 16 zones (Model: 16ZULWC) Model numbers may have additional letters depending on the model, such as Pro Series, which contains PS at the end, or BLI in the case of Indoor Pro Series (that does not contain the weatherproof enclosure), or USI. ### **Warranty**  * 4-year limited warranty. ### **Optional Outdoor Enclosure**  Outdoor installations require an outdoor enclosure to protect your controller.  * Compatible with [Rachio Outdoor Enclosure](https://rachio.com/waterproof-enclosure/)   * Operating temperature: -13°F to 140°F ### **Features**  * Valve Monitoring  * Heat Wave Boost * * * # Generation 2 **![](https://cdn.kustomerhostedcontent.com/media/5f775c7b7cad407e578daa84/435d1d90701c4a1554ec25cdc0b477d4.jpg)** ### Gen 2 Tech Specs ### Internet Requirements  This Rachio controller requires a 2.4ghz Wi-Fi internet connection (802.11 b/g/n). Supported Wi-Fi encryption standards: * WPA2 (recommended) * WPA Enterprise-level encryption is  _NOT supported_. We recommend internet connections with a 1 Mb or higher upload speed for optimal performance. In the event of a Wi-Fi outage or intermittency, the controller’s memory retains the last saved schedule received from the Rachio cloud and maintains the schedule until an update can be downloaded (_more info_ [here](https://rachio.kustomer.help/en_us/what-if-my-controller-goes-offline-SyboPIkFv)). Wireless Module: AzureWave Technologies, Inc. IEEE 802.11b/g/n Smart Energy Module CU288 (FCC ID: TLZ-CU288) ### ### Power The Rachio controller must be connected to the AC power adapter included. DC Transformers are not supported. * Transformer Power Input: 120V AC / 60Hz * Transformer Power Output: 24V AC (1000 mA  _= 1 Amp)_  * Designed For 24V AC Solenoids * Power Supply: External Transformer (6 ft cord) * Power Supply Housing: 2-1/8" 3-1/8" x 1-3/4" In the event of a power outage, the system will not run. Account, zone, and schedule settings will be saved in the Rachio cloud. ### Rachio App Compatibility * Apple iOS: The Rachio app requires a phone or tablet running iOS 16.0 or later. * Android: The Rachio app requires a phone or tablet running Android 8.0 or later. Please note: the Rachio mobile app is required to connect devices to Wi-Fi. ### Zones/Model Numbers * 8 zones (8ZULWB) * 16 zones (16ZULWB) ### Size and weight * Dimensions: 9.25” L x 5.625” H x 1.625” W * Weight: 1.2 Lbs ### Environmental * Indoor Installation ([Outdoor Installation with Enclosure](https://rachio.kustomer.help/en_us/how-do-i-install-a-rachio-controller-outdoors-weatherproof-outdoor-enclosure-r1LPLktv)) * Temperature Range: -31F - 140F ### Sprinkler Compatibility * Zone Capacity * 16 zones + Master Valve/Pump Relay[](https://support.rachio.com/en_us/how-do-i-add-another-controller-or-multiple-controllers-to-my-account-S12aDIJYD) * Rain Sensor * Wired & Wireless Normally Closed (NC) sensors * Soil Sensor * Wired & Wireless Normally Closed (NC) sensors * Flow Sensor * [Compatible Sensors](https://support.rachio.com/ryoUGYT4bg) ### Warranty * [2 Year Limited](http://rachio.com/warranty) * * * # Generation 1 # **![](https://cdn.kustomerhostedcontent.com/media/5f775c7b7cad407e578daa84/2039cf892b07f69c5c952ecef005d60f.jpg)** ### Gen 1 Tech Specs ### Internet Requirements This Rachio controller requires a 2.4ghz Wi-Fi internet connection (802.11 b/g/n). Supported Wi-Fi encryption standards: * WPA2 (recommended) * WPA Enterprise-level encryption is _NOT_ supported. We recommend internet connections with a 1 mb or higher upload speed for optimal performance. In the event of a WiFi outage or interruptions, the controller’s memory retains the last saved schedule received from the Rachio cloud and maintains the schedule until an update can be downloaded. (_more info_ [here](https://rachio.kustomer.help/en_us/what-if-my-controller-goes-offline-SyboPIkFv)) ### Power The Rachio controller must be connected to the AC power adapter included. DC Transformers are not supported. * Transformer Power Input: 120V AC / 60Hz * Transformer Power Output: 24V AC (1000 mA  _= 1 Amp)_  * Designed For 24V AC Solenoids * Power Supply: External Transformer (6 ft cord) * Power Supply Housing: 2-1/8" 3-1/8" x 1-3/4" In the event of a power outage, the system will not run. Account, zone, and schedule settings will be saved in the Rachio cloud. ### ### Rachio App Compatibility * Apple iOS: The Rachio app requires a phone or tablet running iOS 16.0 or later. * Android: The Rachio app requires a phone or tablet running Android 8.0 or later. Please note: the Rachio mobile app is required to connect devices to Wi-Fi. ### Model Numbers * 16 zones (16ZULW) * 8 zones (8ZULW) ### Size and weight * Dimensions: 2.165” x 7.25” x 7.25” * Weight: 2.7 Lbs ### Environmental * Indoor Installation[](https://rachio.kustomer.help/en_us/how-do-i-install-a-rachio-controller-outdoors-weatherproof-outdoor-enclosure-r1LPLktv) * Temperature Range: -31F - 140F ### Sprinkler Compatibility Zone Capacity * 16 zones + Master Valve/Pump Relay[](https://support.rachio.com/en_us/how-do-i-add-another-controller-or-multiple-controllers-to-my-account-S12aDIJYD) * Rain Sensor * Wired & Wireless  Normally Closed (NC) sensors * Soil Sensor * Wired & Wireless  Normally Closed (NC) sensors * Flow Sensor * Not supported on Generation 1 controllers ### Warranty * [2 Year Limited](http://rachio.com/warranty) * * * ## Comparison Table Gen 1 Gen 2 Rachio 3e Rachio 3 Rachio 3 Pro Series Works with almost any existing sprinkler system. ✔ ✔ ✔ ✔ ✔ Controller installation in under 30 minutes. No special tools or expertise are required. ✔ ✔ ✔ ✔ ✔ Control and monitor watering from the Rachio app on your smartphone or directly from the controller. ✔ ✔ ✔ ✔ ✔ Compatible with smart home platforms like Amazon Alexa, Google Assistant, and more. ✔ ✔ ✔ ✔ ✔ Standard Weather Intelligence™ with Rain, Freeze, Wind, Saturation Skips, and more. ✔ ✔ ✔ ✔ ✔ Supports 2.4 GHz Wi-Fi. ✔ ✔ ✔ ✔ ✔ Available in 8 or 16-zone models. ✔ ✔ ✔ ✔ ✔ An optional waterproof outdoor enclosure is available. ✔ ✔ ✔ ✔ Premium Weather Intelligence™ Plus (hyperlocal accuracy, continuous monitoring, comprehensive data). ✔ ✔ ✔ ✔ ✔ Supports dual-band Wi-Fi (2.4 GHz & 5 GHz). ✔ ✔ ✔ Easy-press connectors, 14 & 18 gauge wire support. ✔ ✔ On-unit Run, Pause, and Skip buttons. ✔ ✔ ✔ ✔ Leak detection and blockage notifications.\* ✔ ✔ Low-flow leak detection with highly accurate Vortex technology.\* ✔ ✔ Instant zone shut-off triggered by leak detection.\* ✔ ✔ Precise outdoor water usage monitoring.\* ✔ ✔ \*When equipped with a Flow Sensor. # Do you still need help? We have a chat support team ready to assist you! You can submit a support request by selecting the chat icon in the bottom right of this page and a member of the support team will contact you live. ### **Summer Hours (April-September)** 7 am - 6 pm (MST), 7 days a week. ### **Winter Hours (October-March)** 8 am - 5 pm (MST), Monday - Saturday. We are closed on Thanksgiving, Christmas, and New Year's Day.