18
white
white/black
24 vdc
com
External
Receiver
Wired Wall Button
com
n/o
4
3
2
1
IR Beams
green (4) grey (3)
white (2)
red (1)
TYPICAL WIRING DIAGRAM WEATHERDRIVE MR550EVO
Information for Service Personnel
26
ACCESSORIES
1. Model E138M 2 Channel wireless wall button
2. Model E960M 4 Channel Premium transmitter
3. Model E950M 4 Channel transmitter
4. Model E940M 1 Channel transmitter
5. Model E943M 3 Channel transmitter
6. Model E945M 3 Channel mini transmitter
7. Model E840M Keyless entry system
8. Model 760 Outside keyswitch
9. Model CM1702 Outside quick release (steel fix)
10. Model DMK1 Outside quick release (brick fix)
11. Model 774ANZ The Protector System
TM
(IR Beams)
25
4
5
6
11
7
9
8
3
1
10
2
NOTE:
Use of any Chamberlain Group accessories are approved to use with this opener. This includes genuine
Merlin accessories. Generic compatible accessories are
NOT
approved for use with this opener
.
NOTE:
The terminal block is weather protected by a rubber grommet.
When using external wiring, the cable holes can be punched through with a small screwdriver. These
holes should be sealed with silicon sealant in order to maintain the weather proof rating.
