11
Colour Module no. Function
Yellow MTL5501-SR
Digital Inputs
White MTL551x
Red MTL552x Digital Outputs
Blue MTL5531/33 Vibration
Purple MTL5532 Pulse
Blue
MTL5541x
MTL5544x
Analogue Inputs
Green
MTL5546x
MTL5549x
Analogue Outputs
Blue MTL556x Fire & Smoke
Orange
MTL557x
MTL558x
Temperature inputs
Grey MTL5599 Dummy isolator
Table 4.2: MTL5500 front label colour coding
Figure 4.11: MTL5500 complete assembly