User's Manual
CE910-DUAL Hardware User Guide
1vv0301010 Rev .0 – 2012-07-10
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 48 of 63
10.4. Using the Temperature Monitor Function
10.4.1. Short Description
The Temperature Monitor is a function of the module that permits control of its internal
temperature and if properly set (see the #TEMPMON command on AT Interface guide) raises
to High Logic level a GPIO when the maximum temperature is reached.
10.5. Indication of Network Service Availability
The STAT_LED pin status shows information on the network service availability and Call
status. In the CE910-DUAL modules, the STAT_LED usually needs an external transistor to
drive an external LED. Because of the above, the status indicated in the following table is
reversed with respect to the pin status:
LED status Device Status
Permanently off
Device off
Fast blinking
(Period 1s, Ton 0,5s)
Net search / Not registered / turning off
Slow blinking
(Period 3s, Ton 0,3s)
Registered full service
Permanently on
a call is active