The Modem gives you instant text message updates, direct to your phone. Send 'status', to get an update from your Harvest-Master controller, from anywhere! Turn the extra 8 outputs ON or OFF by text message. Get text messages for an alarm! Overheating, low water/fluid levels, or INTRUDERS! (door/window switches, motion detectors).

The GSM modem is can be used with the Plus Climate Controller. Operates remote control on the 8 'extra' outputs.