Adesys bv, Wateringen, NL
Installation instructions
Octalarm-T2 / T4 / T8 / T16
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does not allow for alarm diallers to automatically check the calling credit status. Running out of
credit will result in the alarm system being blocked!
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The Octalarm has numerous different alarm protocols, some of which are not yet supported by all
network providers. See the
GSM enclosure
provided for an up-to-date list.
16.8 Connecting the COM port
The COM port is designed in accordance with the V.24 / RS-232 standard, and provides the following
signals:
PIN nr Name In / Out Description
2 TXD in Transmit Data
3 RXD out Receive Data
4 RTS in Request To Send
5 CTS out Clear To Send
6 DSR out Data Set Ready
7 GND - Ground
8 CD out Carrier Detect
20 DTR in Data Terminal Ready