Visonic MCT-237 User Manual Download Page 1

D-302675 

MCT-237

 

 

 

English 

Wireless CodeSecure™ Two-Way Keyfob Transmitter - User Guide 

 

 

Español 

Mando Bidireccional Inalámbrico  CodeSecure™ - Manual de Usuario

 

 

 

Portuguese 

Comando Bidirecional Sem Fios de CodeSecure™

 

- Manual do Utilizador

 

 

MCT-237  

  

ENGLISH 

1. INTRODUCTION 

1.1 Description  

The MCT-237 is a miniature CodeSecure™ 6-button keyfob transmitter, 

designed for use with the PowerMax Pro, PowerMaxComplete, 

PowermaxExpress unit. The device enables the user to arm/disarm the 

alarm system and to view system status. 
For each control panel, a maximum of eight MCT-237 keyfob devices 

may be enrolled. Operating power is obtained from an internal 1.5 V 

alkaline battery. Each transmitter is supplied with a small key ring. 
Transmission is initiated by pressing any one of the six pushbuttons. 

Upon pressing a specific button, the keyfob transmits a 

CodeSecure™ digital sequence identifiable by the PowerMax unit, 

and a 4-bit function code associated with the button that was pressed. 

The next time a button is pressed, the keyfob will transmit a digital 

sequence of three transmissions that differs from the one used in the 

previous transmission and the respective function code. As a result, 

malicious “code grabbing” is virtually impossible. 
The MCT-237 includes an optional partition feature. Partitioning allows 

you to have up to three independently controllable areas with different 

user codes assigned to each partition or one user code assigned to up 

to three partitions. A partition can be armed or disarmed regardless of 

the status of the other partitions within the system. 

Note:

 The Partition feature appears only if Partitioning is enabled via 

the control panel. 

The main features of the MCT-237 are: 

 Status, alarm

 

memory,

 

and

 

trouble

 

data

 

retrieval

 

from

 

the control 

panel. 

  Visual indications by LCD icon display. 

  LCD backlighting activation. 

  Various audible signals sounded by the speaker in response to 

specific actions. 

  1.5 Volt Alkaline battery. 

1.2 LCD Icons 

The following table provides definitions for each of the eight icons that 

appear on the LCD display. 

 

Icon

 

Definition 

 

Lights steadily when the system / a system partition is in 

Arm Home mode. 
Flashes when the system / a system partition is in 

progress of an exit delay. 

 

Lights steadily when the system / a system partition is in 

Arm Away mode. 
Flashes when the system / a system partition is in progress 

of an exit delay 
When the system / a system partition is in progress of an 

entry delay both arm and home icons flash. 

 

Lights steadily when the system / a system partition is 

disarmed. 

 

Lights steadily to indicate

 

a system partition or a 

combination of up to three system partitions. 

 

Lights steadily when a trouble state is detected within the 

control panel / a system partition.

 

 

Lights steadily when the battery must be replaced without 

delay. A “low battery” report is transmitted with the 

outgoing digital message. 

 

Lights steadily when there is a communication failure

 

 

Flashes when the alarm has been activated

 

or if there is a 

memory condition.

 

1.3 Selecting a Partition / Partitions and 

Partition Status 

The MCT-237 two-way wireless keyfob is used to control single or all 

partitions. 

Arming/Disarming All Partitions 

To arm/disarm all partitions, press the HOME / AWAY / DISARM 
button on the keyfob. 

Partition Status and Arming/Disarming a Single Partition 

Press the PARTITION STATUS button on the keyfob once; the 

display reads the status of the partition. In this state repeated 

pressing of the PARTITION STATUS button will display the status of 

the enabled partitions and Partition All. To arm/disarm the desired 

partition(s), press the HOME/AWAY/DISARM button. 

Note:

 

When displaying all partitions, the various statuses of partitions 

are displayed simultaneously. 

2. SPECIFICATIONS 

Frequency (MHz):

 315, 433, 868.95 or according to local requirements.

 

Modulation: 

ASK (ON-OFF keying)

 

Coding: 

CodeSecure 

Transmission Range: 

The transmission range depends on the 

sensitivity of the receiver. When the MCT 237 is used with Powermax 

Express @ 315 MHz, the typical line of sight reception range 

according to UL testing requirements is up to 55 m (180 ft). 

Battery:

 1.5 V AAA alkaline battery, type GP or equivalent. 

Current Consumption:

 85 mA during transmission.

 

Battery Life Expectancy:

 2 years (for typical use). 

Note: 

If transmission is still possible despite the battery condition, the 

unit will send a low battery signal to the receiver.

 

Control Functions:

 Home Arming, Away Arming, Disarming, System 

Partition/Status, AUX 1 and 2 

Operating Temperature:

 -10° to 55°C (14° to 131°F). 

Dimensions:

 75 x 38 x 18 mm

 

(2-15/16 x 1-1/2 x 11/16 in.). 

Weight (including battery):

 36 g (1¼ oz). 

Color:

 Black 

Compliance with Standards:

 CE/RTTE and EN 50131-1 Grade 2, 

Class II 

USA:

 (FCC) CFR 47part 15, UL 1023, UL 985, UL 1635, UL 1637 

Canada:

 RSS 210, ULC S545-02, ULC C1023,CSA C22.2#205 

3. TESTING AND MAINTENANCE 

3.1 Testing a New Unit  

Since the keyfob transmitter is supplied with the battery already 

installed, the unit is practically ready to be tested. 

IMPORTANT! Before testing, "teach" the control panel the ID code 

of the keyfob, as instructed in the control panel Installer Guide. 

A.

  Stand near the control panel and press the keyfob button marked 

with a closed padlock icon. 

B.

  Make sure that the control panel responds as programmed and as 

stated in the Installer Guide. 

C.

  Operate the keyfob from various locations within the area covered 

by the receiver to determine "dead" locations, where transmission 

is blocked by walls and large objects, or affected by structural 

materials. For optimum operation, point the keyfob directly toward 

the control panel. 

 

Note:

 If dead/marginal zones are a problem, relocating the control 

panel may improve the performance. 

3.2 Replacing the Battery 

Caution!

 Risk of explosion if battery is replaced by an incorrect type. 

Dispose of used batteries according to the instructions.

 

The battery should be replaced upon receiving a low battery LCD indication. 
A replacement 1.5 V AAA alkaline battery, such as GP

 

(or equivalent), 

should be used. Replace the battery as shown in figure 2 & 3. 

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