DE2361
1
0&7
Code-Secure™ Pendant Transmitter
Installation Instructions
,1752'8&7,21
The MCT-231 is a miniature pendant transmitter, designed for
alarm and remote control applications. When activated, the
transmitter sends out a Code Secure™ digital sequence
identifiable by compatible Code Secure™ receivers. Each
transmission comprises a digital sequence that differs from the
one used in the previous transmission and which only the target
receiver can recognize. “Code grabbing” is therefore not possible.
Transmission is initiated by depressing the pushbutton at the
center of the unit. Operating power is obtained from a coin-type,
3-volt lithium battery that can last up to 10 years.
An LED lights during transmission, indicating that the battery
voltage exceeds 2.4 V. If the LED flashes during transmission,
the battery must be replaced immediately. In addition, a “low
battery” report will be transmitted with the outgoing digital
message. Compatible receivers are designed to identify this
report and operate a corresponding output.
All MCT-231 units are supplied with the chain installed, to be
worn around the neck as pendant transmitters. A key ring is also
included in the package, for use in place of the chain.
Figure 1. MCT-231 with Cover Removed
63(&,),&$7,216
Frequency (MHz): 315, 404, 418, 433.92 or other frequencies
according to local requirements.
Modulation: ASK (ON-OFF keying)
Transmitter ID: 36-bit digital word, Code Secure™
Minimum Transmit Duration: 2 sec
Power Supply: 3-volt Lithium cell (Toshiba type CR-2032 or
equivalent).
Nominal Battery Capacity: 220 mAh
Current Consumption: 6 mA (during transmission)
Battery Life: 3 to 5 years with about 3 transmissions per day; up
to 10 years with one transmission per day or none at all.
Battery Supervision:
Good battery - LED lights steadily upon activation.
Low battery - LED flashes upon activation.
Note: If transmission is still possible despite the battery condition,
the MCT-231 will send a low battery report to the receiver.
Operating Temperature: 0° to 50°C (32° to 122°F).
Dimensions: 32 x 53 x 17 mm (1-1/4 x 2-1/8 x 11/16 in.).
Weight: 18 g (0.65 oz).
Color: White
Standards: Meets FCC part 15, ETS 300-220, ETS 300-683 and
MPT 1340.
This device complies with Part 15 of the FCC Rules and
RSS-210 of Industry and Science Canada. Operation is subject
to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
CE Compliance
The 418 MHz and 433.92 MHz models of this device comply
with the European Council Directive EMC 89/336/EEC &
92/31/EEC, and bear the CE mark and certification.
7(67,1*$1'0$,17(1$1&(
7HVWLQJD1HZ8QLW
Since the MCT-231 is supplied with the battery already installed,
the unit is practically ready to be tested.
A. "Teach" the target receiver the ID code of the tested
transmitter, as instructed in the target receiver's installation
manual.
B. Stand 3 m (10 ft) away from a target receiver and operate the
MCT-231 by depressing its transmit pushbutton. Verify that
the transmitter LED lights, indicating good battery condition.
C. Observe that the receiver’s LED lights steadily, and make sure
that the controlled circuit reacts as programmed.
D. Operate the transmitter from various locations within the area
covered by the target receiver to determine "dead" locations,
where transmission is blocked by walls and large objects, or
affected by structural materials.
Note: If dead/marginal zones are a problem, relocating the
receiver may improve the performance.
%DWWHU\5HSODFHPHQW
The original battery supplied with the transmitter can last up to 10
years if used sparingly (only a single transmission per day).
Battery replacement will therefore be needed very rarely. To
replace the battery proceed as in 3.3, 3.4, 3.5, below.
2SHQLQJWKH&DVH
A. To open the case, refer to Figure 2. Insert an 1/8 inch
screwdriver blade in the slot at the bottom of the case. Press
the blade inward, applying moderate pressure, and while
pressing, swing the handle slightly down until the covers
partially separate.
Figure 2. Opening the Case