Micro Seven Inc.® model CT10, CM10, and CT200 Low-cost alarm-receiver

Micro Seven, Inc. model CT10, CM10, and CT200 for the Ademco® Alarm-Receiver (registered trade mark by ADEMCO Group, a division of Pittway) with 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 at RS232C interface to a PC. Alarm receiver software is provided.

CT10 or CM10 is shown in above picture.

Model LS15E+ with FXO and FXS interfaces is strongly recommended instead of models CT10, CM10 and CT200 for setting up your alarm system configuration.



i Small, 3" x 1.5" x 4.5"
i Low-cost
i AC/DC Operation
i Low cost, and portable
i Security Industry Association’s Ademco® Contact ID Protocol
i Handshake and kiss-off tones
i RS232C interface to transmit alarm messages to PC and the control software to program
many parameters including telephone numbers
i Checksum calculation of received alarm messages
i Caller-ID receiver option (CT10)
i Car battery adapter and 230 volt power options
i Alarm receiver software
i Dialing and relaying alarm messages to other alarm receiving as an optional feature
i 6 month warranty

Application and benefit of alarm receiver

i Demonstration and testing alarm control panels at factories and fields
i No alarm receivers required for testing alarm control panels
i Complete testing of alarm panels before the installation
i No PBX or local telephone service needed for CM10



CT10 and CT200: contains regular telephone line interface.

CM10: simulated telephone line to interface alarm panel with a piece of telephone cord.

CT200: dual line for receiving simultaneous alarm messages at both lines.


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


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


Characteristics for CT10 and CT200:

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.


Characteristics for CM10:

Battery-feed voltage and loop current: 24 volt and 25 mA

Programmable inputting telephone number

Dial tone and ring-back tone

Disconnect signal

All other signals required for alarm receivers.


RS232C Interface:

Speed: 1200 baud, with one stop bit, no parity bit

The interface signals: Receive Data, Transmit Data, Data Set Ready, Clear-to-send, and ground. The Data Terminal Ready signal is forced high at LS15E+ meaning that a PC is always ready to receive data from LS15E+.

Connector: 9-pin D-sub on LS15E+ the rear panel

Cable(9-pin M/9-pin F) is provided.

Received alarm messages are computed for the checksum.


AC/DC Adapter(provided with LS15E+): 117VAC +/- 5%, or 230VAC +/- 5%(for optional 230V AC/DC Adapter)

AC/DC Adapter or Car Battery Adapter input: 12VDC unregulated, 800mA maximum 

Line Status Display: red LED for each line to indicate off-hook status (continuous on) 

Calibration: not required because digitally synthesized tones

Power-On Indicator: green LED display

Dimensions: 19 cm (4") W x 4.5 cm (1.75") H x 10 cm (7.5") L

Weight: 400g (0.8 LBS.)

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:

Ethernet interface similar to model LS15ETH to transmit DC-09 IP messages to servers

Car Battery Adapter

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

USB/RS232 adapter cable (virtual RS232 port at PC)


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


Alarm receiving software:

Standard alarm receiver software, that is provided at no charge, “as is” with no support, no liability, and no support from Micro Seven, in Windows operating system that receives and decodes caller-ID information and Contact ID alarm messages displays caller’s telephone number, name, date, nature of alarm messages on PC screen. The software also stores the same information as a text file. Any additional software requirement is custom.


We provide no liability using all our products for alarm receiving and alarm receiving software to all people and companies including alarm panel users, alarm central station, telephone companies, and all distributors.


As an optional feature, dialing telephone numbers and delivering Contact-ID messages to other alarm receivers is available.

Other alarm products:

  1. LS15E, LS15E+, Micro Seven, Inc. Alarm Receiver Simulator
  2. AP15, PC alarm panel, RS232 compatible alarm panel
  3. PM10, Alarm panel with excessive sound detection and low/high temperature monitor
  4. LS15ETH with Ethernet interface


Micro Seven, Inc. ®

1095-K N.E. 25th Hillsboro, OR 97124 U.S.A.

PHONE: 503-693-6982, FAX: 503-693-9742
Home Page:

Email: sales@microseveninc.com

Other alarm receivers and related products

Price list

Typical connections of CT10 and CM10 with alarm panels and PC are shown below.