---
title: HRC 900
description: "# Back Ground The original HRC 990 was originally launched as the HRC 900 with a screw top lid in 2008. [![](https://husqvarna-water.com/wp-content/uploads/2021/09/04000-138x150.jpg)](https://husqvarna-water.com/wp-content/uploads/2021/09/04000.jpg) By 2009 a number of improvements were identified and the HRC 900 was re-introduced as the HRC 990.…"
url: "https://husqvarna-water.com/knowledgebase/hrc-900/"
updated: "2023-02-10"
category: Discontinued Products
tags:
  - Controller
  - Installation
  - Manual
---

# HRC 900

# Back Ground

The original HRC 990 was originally launched as the HRC 900 with a screw top lid in 2008.

[![](https://husqvarna-water.com/wp-content/uploads/2021/09/04000-138x150.jpg)](https://husqvarna-water.com/wp-content/uploads/2021/09/04000.jpg)

By 2009 a number of improvements were identified and the HRC 900 was re-introduced as the HRC 990. A major improvement was the introduction of the flip top lid with a heavy duty O-ring to prevent water ingress.

[![](https://husqvarna-water.com/wp-content/uploads/2021/03/HRC-990-Battery-Powered-Controller_cat_100115-150x150.png)](https://husqvarna-water.com/wp-content/uploads/2021/03/HRC-990-Battery-Powered-Controller_cat_100115.png)

# Manuals for the HRC 900

[![HRC 900 User Manual](https://husqvarna-water.com/wp-content/uploads/2021/09/HRC-900-Manual-150x93.png)](https://husqvarna-water.com/wp-content/uploads/2021/09/HRC-900-Manual.pdf)

[HRC 900 Manual](https://husqvarna-water.com/wp-content/uploads/2021/09/HRC-900-Manual.pdf)

[![HRC 900 Rain Sensor Manual](https://husqvarna-water.com/wp-content/uploads/2021/09/HRC-900-Rain-Freeze-Sensor-Manual-150x93.png)](https://husqvarna-water.com/wp-content/uploads/2021/09/HRC-900-Rain-Freeze-Sensor-Manual.pdf)

[Rain Sensor Manual](https://husqvarna-water.com/wp-content/uploads/2021/09/HRC-900-Rain-Freeze-Sensor-Manual.pdf)