Unit installation

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8.3 CTM City Tie Module
The CTM is designed to interface between a control panel and a local city tie box. The interface from the
control panel is via a 24VDC signal circuit. This module is intended for connection to the control unit at the
protected premises.
Ratings:
City Tie Module
• Operating Voltage 24 VDC
• Standby Current 2 mA
• Alarm Current 1.5 A (less than 10 milliseconds) for Model DC-2A Master Box
• UL listed File S3610
City Tie Box
• Series type Coil Resistance 14.5 ohms
The CTM is wired as shown below.
Note:
• The CTM is separately listed equipment. Refer to the installation and wiring instructions provided
with the unit.
• When connecting the CTM module to any of the bell (NAC) circuits, that circuit(s) must be
programmed as a strobe circuit
Figure 35: CTM City Tie Module Wiring