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ETM9900(J) Quick Start Guide Issue 27012009
2. Set I/O1 as Digital Low to High (NC), the message Tank Level Low will be sent to each
phone number when I/O1 changes from closed to open circuit
Note:
1. Delay before alarm is activated is recommended to reduce the incidence of multiple SMS
being sent in the event of chattering/bouncing contacts
2. Alarm restore delay stops additional alarm messages occurring within 10 minutes of original
event
3. In the Alarm / Message Tab a limit can be set on the number of SMS sent in every 24 hour
period, see previous page.