![](http://pdfasset.owneriq.net/6/48/6480749d-0863-4eaf-be84-b0db02f40936/6480749d-0863-4eaf-be84-b0db02f40936-bg16.png)
18 Pelco Manual C550M-E (8/97)
Figure 16. External Device Wiring Diagram
1
2
3
8
MANUAL IRIS
GROUND
CONNECT TO NEGATIVE
SIDE OF 12 VDC SUPPLY
NOTE: CUSTOMER SUPPLIES PARTS AND 12 VDC
POWER SUPPLY
+ 12 VDC
NORMALLY-OPEN
CONTACTS
10 VDC RELAY
25 mA COIL
CURRENT MAXIMUM
1N4005
COAXITRON
RECEIVER/DRIVER
37-PIN CONNECTOR