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DE2294RLU 

 

MCT

MCT

MCT

MCT----241MD

241MD

241MD

241MD RL

 RL

 RL

 RL

 

Distress / Fall-detector PowerCode™ Transmitter 

User’s Guide

 

1. INTRODUCTION

1. INTRODUCTION

1. INTRODUCTION

1. INTRODUCTION

 

The MCT-241MD RL is a miniature, 
microprocessor-controlled personal UHF 
transmitter. It is designed to transmit coded alert 
signals manually (when the user presses the 
button) or automatically (when the user falls 
down). The transmitter is waterproof and suitable 
for wearing in a shower. Operating power is 
obtained from an internal 3V CR-2 Lithium battery. 

Transmission is initiated in the following cases:  

!

Depressing the recessed oval pushbutton (see 

Fig. 1). A built-in timer determines the 
transmission time to 3 seconds, even if the user 
maintains the button pressed shorter or longer 
than that. 

!

Tilting the transmitter by more than 60° in any 

direction. In this case, the 3-second transmission 
will take place after a 2- second delay.  

When triggered, the MCT-241MD RL transmits a 
unique 24-bit digital ID, randomly selected in the 
factory. This code is one of 16 million possible code 
combinations and is therefore virtually impossible to 
reproduce. The ID code is followed by the 
appropriate digital marker that indicates an “alarm” 
or a ‘fall-detector” event, as the case may be. 

A red LED (see Fig. 1) lights steadily during 
transmission, to reassure the user that a 
transmission is taking place and to indicate that 
the battery condition is good. If the LED flashes 
each time the transmitter is triggered, this 
indicates that the voltage is low and the battery 
must be replaced as soon as possible. 

If the transmitter is triggered while the battery 
voltage is low, a ‘low battery’ digital marker is 
included in the transmitted message. In addition, 
the battery is self-tested every 12 

hours. A 

supervisory ‘low battery’ message is transmitted 
after detection of 3 consecutive “low battery” states. 

The transmitter case is hermetically sealed (no 
screws) to ensure complete waterproofing of the 
case. Battery replacement can therefore be carried 
out in the factory only. 

The transmitter is supplied with two wearing 
accessories, a neck cord (to be worn around the 
neck - see Fig. 2) and a clip (to be attached to the 
user belt or shirt pocket - see Fig. 3). 

The neck cord includes a built-in safety release 
mechanism. This neck cord must never be replaced 
with a cord that does not include a safety release. 

MCT-241MD RL Transmitter

Clip

LED

Transmission

 pushbutton

Front side

(don’t cover

with hand

during

transmission)

 

Figure 1

 

- Using the MCT-241MD RL

 

 

Figure 2 - MCT-241MD RL with Neck Cord

 

   

  

 

Figure 3 - Clip Attachment

 

 

 

2

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2. OPERATION AND ENROLLMENT

. OPERATION AND ENROLLMENT

. OPERATION AND ENROLLMENT

. OPERATION AND ENROLLMENT    

2.1 Transport Mode

 

New MCT-241MD RL units are shipped with the tilt 
(fall-detector) function in ‘deep sleep”, to prevent 
inadvertent transmissions until the unit is placed 
into service. To ‘awaken” the tilt function, the 
alarm pushbutton must be pressed at least 5 times 
in succession. 

2.2 Tilt Alarm/Tilt Restore

 

A built-in tilt sensor is activated once the unit is 
tilted over by more than 60

°

 in any direction. The 

Base Unit will notify the user after 30 seconds, and 
the actual tilt alarm transmission to the central 
station will take place after an additional 30-second 
delay, throughout which the unit may be restored to 

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