# Rain Bird smart sprinkler controllers

*Rain Bird / 7 models / 2019*

> Rain Bird sells the ARC with Wi-Fi built in, the RC2 and ST8-2.0 as Wi-Fi controllers, and the TRU, ESP-TM2 and ESP-ME3 as controllers that need an LNK2 WiFi Module for Wi-Fi. The ARC has 4, 6 and 8 station versions, the ST8-2.0 and RC2 have 8, and the ESP-TM2 and ESP-ME3 reach 12 and 22. Rain Bird lists Alexa and Google Assistant for the ARC and the LNK2 module, and Alexa for the ST8, ESP-TM2 and ESP-ME3. The LNK2 is sold separately.

- Canonical page: https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | Rain Bird |
| Models | 7 |
| Current | 7 |
| Releases | 2019 |

## Currently sold

**Rain Bird smart sprinkler controllers: models on sale now**

| Model | Series | Released |
| --- | --- | --- |
| [Rain Bird ESP-ME3](https://smarthomecanon.com/devices/rain-bird-esp-me3) | ESP-ME3 | 2019-04-08[^1] |
| [Rain Bird ARC Series](https://smarthomecanon.com/devices/rain-bird-arc) | ARC Series | unknown |
| [Rain Bird ST8-2.0](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-st8-2-0) | ST8-2.0 | unknown |
| [Rain Bird RC2](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-rc2) | RC2 | unknown |
| [Rain Bird TRU Series](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-tru) | TRU Series | unknown |
| [Rain Bird ESP-TM2](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-esp-tm2) | ESP-TM2 | unknown |
| [Rain Bird LNK2 WiFi Module](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-lnk2) | LNK2 WiFi Module | unknown |

## Lineup

**Rain Bird smart sprinkler controllers: every model**

| Model | Model numbers | Type | Zones | Connectivity | Mounting | Works with | Status |
| --- | --- | --- | --- | --- | --- | --- | --- |
| [Rain Bird ARC Series](https://smarthomecanon.com/devices/rain-bird-arc) | ARC4I, ARC6I, ARC8O, ARC6I-230V, ARC6O-AUS | Sprinkler controller[^2] | 4, 6 or 8 by model[^2] | Wi-Fi built in, 2.4 GHz 802.11b/g/n[^2] | Indoor (ARC4I, ARC6I) or indoor/outdoor (ARC8O)[^2] | Alexa, Google Assistant[^2] | Current[^2] |
| [Rain Bird ST8-2.0](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-st8-2-0) | ST8I-2.0 WIFI, ST8O-2.0, ST8I WIFI | Sprinkler controller[^3] | 8[^3] | Wi-Fi, through the LNK2 WiFi Module[^3] | Indoor (ST8I) or outdoor (ST8O)[^3] | Alexa[^4] | Current[^3] |
| [Rain Bird RC2](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-rc2) | RC2-120V, RC2-230V, RC2I4-230V, RC2I6-230V | Sprinkler controller[^5] | 8 (4 and 6 on international indoor models)[^5] | Wi-Fi, 2.4 GHz[^5] | Outdoor (US model)[^5] | unknown | Current[^5] |
| [Rain Bird TRU Series](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-tru) | TRU4I, TRU6I, TRU8IW, TRU8O, TRU6I-230V, TRU6O-AUS | Sprinkler controller[^6] | 4, 6 or 8 by model[^6] | Wi-Fi with the LNK2 WiFi Module, sold separately[^6] | Indoor (TRU4I, TRU6I, TRU8IW) or indoor/outdoor (TRU8O)[^6] | unknown | Current[^6] |
| [Rain Bird ESP-TM2](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-esp-tm2) | TM2-4-120V, TM2-6-120V, TM2-8-120V, TM2-12-120V, TM2-4-230V, TM2-6-230V | Sprinkler controller[^7] | 4, 6, 8 or 12 by model[^7] | Wi-Fi with the LNK2 WiFi Module, sold separately[^7] | unknown | Alexa[^4] | Current[^7] |
| [Rain Bird ESP-ME3](https://smarthomecanon.com/devices/rain-bird-esp-me3) | ESP4MEI, ESP4ME3, ESP4ME3EUR, ESP4ME3AUS | Sprinkler controller[^8] | 4, expandable to 22[^8] | Wi-Fi with the LNK2 WiFi Module, sold separately[^8] | Indoor (ESP4MEI) or indoor/outdoor (ESP4ME3)[^8] | Alexa[^4] | Current[^8] |
| [Rain Bird LNK2 WiFi Module](https://smarthomecanon.com/lines/rain-bird-smart-sprinkler-controllers#rain-bird-lnk2) | LNK2WIFI | Wi-Fi module[^9] | unknown | Wi-Fi, 2.4 GHz only[^9] | Plugs into the controller[^9] | Alexa, Google Assistant[^9] | Current[^9] |

## Timeline

**Rain Bird smart sprinkler controllers: dated events**

| Date | Model | Event | Detail |
| --- | --- | --- | --- |
| 2019-04-08[^1] | [Rain Bird ESP-ME3](https://smarthomecanon.com/devices/rain-bird-esp-me3) | Announced |  |

## Related pages

- [Rain Bird ARC Series](https://smarthomecanon.com/devices/rain-bird-arc) (device)
- [Rain Bird ESP-ME3](https://smarthomecanon.com/devices/rain-bird-esp-me3) (device)

## Sources

[^1]: New Rain Bird ESP-ME3 controller offers enhanced versatility (2019-04-08). https://www.rainbird.com/corporate/press-releases/new-rain-bird-esp-me3-controller-offers-enhanced-versatility-unique (manufacturer, checked 2026-10-20)
[^2]: ARC Series Smart Irrigation Controllers - Rain Bird. https://www.rainbird.com/products/arc-series-smart-irrigation-controllers (manufacturer, checked 2026-10-20)
[^3]: ST8-2.0 WiFi Smart Irrigation Timers - Rain Bird. https://www.rainbird.com/products/st8-20-wifi-smart-irrigation-timers (manufacturer, checked 2026-10-20)
[^4]: LNK2 WiFi Module Smart Home Integration - Rain Bird. https://www.rainbird.com/media/16585 (manufacturer, checked 2026-10-20)
[^5]: RC2 Smart Controller - Rain Bird. https://www.rainbird.com/products/rc2-smart-controller (manufacturer, checked 2026-10-20)
[^6]: TRU Series Irrigation Controllers - Rain Bird. https://www.rainbird.com/products/tru-series-irrigation-controllers (manufacturer, checked 2026-10-20)
[^7]: ESP-TM2 Series Controllers - Rain Bird. https://www.rainbird.com/products/esp-tm2-series-controllers (manufacturer, checked 2026-10-20)
[^8]: ESP-ME3 Series Controllers - Rain Bird. https://www.rainbird.com/products/esp-me3-series-controllers (manufacturer, checked 2026-10-20)
[^9]: LNK2 Enhanced Control - Rain Bird. https://www.rainbird.com/products/lnk2-enhanced-control (manufacturer, checked 2026-10-20)