Comelit MT 4478A TAS - Manual (Page 11)

11
Note:
•
These connections are typical of two or more System Keyboards.
(max. 32)
•
The RS-485 data cable length could be few kilometres at
9600 bps. (depends on the cable characteristics)
SECTION 3
TECHNICAL SPECIFICATIONS
3.1 APPEARANCE
3.2 SPECIFICATIONS
Number of Keys 25 (foil)
Number of LEDs 6
Control Input/Output RS-485 (D-9M)
Keyboard address 1-16, Internal DIP-Switch
Termination 120 ohm, Internal Jumper
Power requirement 12 V DC
Consumption max. 300 mA DC
Dimensions (W x H x D) 125 x 150 x 34 mm
Weight 0.5 kg