Micro Seven Inc.® model CT400-IP or model CT800-IP 8-line Ademco Contact-ID alarm receiver with Ethernet interface

Micro Seven, Inc. model CT400-IP, 4-line, or CT800-IP, 8-line alarm receiver for the Ademco® Contact ID Protocol provides functions of generation of handshake tones and kiss-off tones, receiving alarm messages, check-sum calculation, and transmitting alarm messages in ASCII format or coded DC-09 type IP messages to PC/server via Ethernet/Internet interface.

    Copyrights Micro Seven, Inc.®, 2014


The front panel of CT400-IP is shown above. It contains power indicator, OH/BUSY indicator for each line and power switch as shown above.


i Security Industry Association’s Ademco® Contact ID Protocol
i Handshake and kiss-off tones
i Industry standard IP message format, DC-09
i Ethernet/Internet interface
i Checksum calculation of received alarm messages
i Very inexpensive
i Central receiver software provided as no charge
i 6 month warranty
i Two different output formats including Micro Seven format and Digital Security Controls’ MLR2E contact-ID alarm receiver
i Kiss-off signal hold until central station receiver software displays alarm message on screen and printer prints out the message

The block diagram of CT400-IP and/or CT800-IP for receiving alarm messages via standard telephone lines and transmitting IP messages to PC/Server is shown below. The central station software from Micro Seven enables simultaneous socket connections to maximum ten CT400-IP and/or CT800-IP.






DTMF detecting signal power for alarm messages: -23dBm to +5dBm per a frequency with maximum 4dB difference between frequencies

Alarm message DTMF signal on time (Burst ON time): 50 ms minimum

Alarm message DTMF signal off time (Burst OFF time): 50 ms minimum 400 ms maximum

Note: Contact ID protocol requires Burst ON and OFF times to be 50 ms minimum and 60 ms maximum.

Handshake tones:

1400: 1400+/- 1Hz, duration of 100 ms +/- 1.5 ms, silence period of 100 ms +/- 1.5 ms, and

2300Hz: 2300+/-2 Hz duration of 100 ms +/- 1.5 ms


Kiss-off tones:

1400 +/- 1 Hz with duration of 750 ms


Front panel control:

Line Input Jacks (eight): USOC-RJ11-C, standard modular phone jack

OH/busy indicator for each line

Power indicator


Rear panel control:

Line Input Jacks (four): USOC-RJ11-C, standard modular phone jack

25-pin D-sub RS232 connector

Power switch

Power connector/receptacle


Electrical characteristics for each line:

High voltage isolation: 1500VRMS between lines and RS232C connector.

Ring signal detector: opto-coupler

Signal isolation: telephone coupling transformer

Off-hook impedance: 50 ohms typical

High ON-hook impedance is obtained by off-hook mechanical relay.

Handshake tone is produced after 1.8 seconds when the off-hook relay is turned on.


Dimensions: 6x7x2 in inches

Weight: 2 lbs. (1 kg).

Environmental: Operating temperature: 0 to 35 degree C, Humidity: 85% RH at 35 degree C

Warranty/Service: 6 months limited warranty. No warranty if any factory seal is broken. Service is performed at the factory, usually within 5 working days.


Options and Accessories:

230V input AC/DC Adapter (117V input unit is a standard.)



Digital Communication Standard-SIA DC-05-1999.09, Ademco Contact ID Protocol for Alarm System Communications

ANSI/SIA DC-09 for Ethernet interface option


The Ethernet interface generates IP messages of all received alarm messages from eight ports to a dedicated alarm receiver/server. Demo server software for PC included for no charge with no software support.

Packets transmitted:  (CRC codes) “ADM-CID”) (event sequence number)(receiver number)(account pref.)(account number)(alarm events, zone, partition)(MAC address)(time stamp)(decoded message)<CR>

Internet functions included: DHCP-client, TCP-client, DNS, SNTP-client, and ICMP-server,

Unique MAC address

Time stamp data from remote SNTP server is translated to UTC(UK time).

Standards: ANSI/SIA DC-09


MICRO SEVEN, INC. 1095-K N.E. 25th Ave., Hillsboro, OR, 97124 U.S.A.



phone: 503-693-6982, fax: 503-693-9742


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