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To send signals to automatically start or stop devices such as irrigation systems, heaters, or fans, use our Alarm Output Module with the GroWeather, Energy EnviroMonitor, or Health EnviroMonitor.

With the Alarm Output Module, you can :

• Select up to four alarm conditions for output. (Not all alarms are selectable; the chart below shows which are available for each station).
• Select high and low alarms for the same weather parameter. For example, you could start a heater when the temperature dropped to 50°F, and keep it on until the temperature reached 55°F.
• Select alarms from two different weather parameters. For example, you could start a sprinkler using the evapotranspiration alarm, and have it turn off it conditions got too windy.

With GroWeather and Energy EnviroMonitor you can also :

• Turn remote devices on or off manually from your computer keyboard using one of our WeatherLinks and the user-controlled outputs on the Alarm Output Module.
• Write your own software program to turn devices on or off using the user-controlled outputs and one of our WeatherLinks.
• Switch the power to a radio data link on and off to conserve energy when operating on solar power or a battery.

Output contact closures are provided by photo-coupled transistors rated at 250mA, 28 VAC or 36 VCD, 80V peak. LED indicators show the status of the Alarm Output Module and each of the output contacts. Except for the time and evapotranspiration alarms, the contact remains open or closed as long as conditions are above or below the threshold entered for the alarm. The time alarm remains active for one minute. When the evapotranspiration alarm is activated, the system sends a signal that can be used to turn on drippers or sprinkler. It then resets the daily evapotranspiration amount to zero. This allows the irrigation system to be turned on several times a day during hot summer mounths.

Includes power adapter and 2' (0.6m) of standard cable to connect the Alarm Output Module to the sensor interface module. When the circuits being controlled by the Alarm Output Module are closer to the weather station console than to the sensor interface module, connect the cable to an Interface Cable Adapter Module instead of the sensor interface module. Then run standard or shielded 8-conductor cable from the Interface Cable Adapter Module to the sensor interface module.

The Alarm Output Module can directly control devices such as sprinkler controllers and thermostats. To switch power to heaters, motors, or other high-power equipment, you will need to add electrical relays. If you choose time delay relays, you can add a variety of timing functions, including turning devices on for specific time periods after an alarm condition is reached.