21
DB-9 Relay Connector
The Radiation Alert Area Monitor can interface with external triggers and external strobes/horns via the relay
connector, located on the bottom of the unit. The connector can accomodate three seperate relays via the one
connector. The corresponding pins for each three pin relay connection are detailed below.
Each relay is a switch, and can be set as an indicator for any of
the alarm states. As an example, presume that Relay C has been
assigned to the Failure Alarm. When there is no current failure
alarm, there will be an open connection (i.e. an open switch)
between pins 6 and 1, and a closed connection (i.e., a closed
switch) between pins 6 and 2. If a failure alarm occurs these
switches will be reversed: there will now be a closed connection
between pins 6 and 1, and an open connection between pins 6 and 2.
Appendix C: Relays and Triggers Technical Info
To send a text message via email, you must use an SMS to email gateway. Just substitute a 10-digit cell number
for ‘number’ for each carrier below:
AT&T: [email protected]
T-Mobile: [email protected]
Verizon: [email protected]
Sprint: [email protected] or [email protected]
Virgin Mobile: [email protected]
Tracfone: [email protected]
Metro PCS: [email protected]
Boost Mobile: [email protected]
Cricket: [email protected]
Nextel: [email protected]
Alltel: [email protected]
Ptel: [email protected]
Suncom: [email protected]
Qwest: [email protected]
U.S. Cellular: [email protected]
Appendix D: How to Send a Text Message Via Email
Relay A
Common = pin 5
Normally Open = pin 4
Normally Closed = pin 9
Relay B
Common = pin 3
Normally Open = pin 7
Normally Closed = pin 8
Relay C
Common = pin 6
Normally Open = pin 1
Normally Closed = pin 2