Halytech
hydroSpider2 User’s Manual v1.23
Page 101
An alarm would be setup on the local unit to as illustrated below:
When the water level falls below 1m, the alarm will trigger and send the control command to the
remote hydroSpider2.
If the remote hydroSpider2 receives the command and it is within 10 minutes of its own time, it will
turn control 1 (switched power out) on, activating the pump. It will then send a response SMS back
to the local unit, acknowledging the command to stop further sending attempts by the local
hydroSpider2. If the command is not within 10 minutes of its own time, the remote unit will not
activate the control, but it will still send the acknowledgement response.
The local hydroSpider2’s escalation time is set to 3 minutes. If it does not receive an
acknowledgement from the remote hydroSpider2 within that time, it will re-send the control
command, because the remote unit’s phone number has been entered twice into the phone number
