Troubleshooting guide

PAGE 8 of 36 VR GSM DOOR INTERCOM TECHNICAL MANUAL VER2.0.0
EXTENSION BUTTON MODULES
The GSM intercom module will accept up to ten call buttons. Any of the vandal resistant
4000 series button modules can be used as shown below.
VR4KBM-4 VR4KBM-5 VR4KBM-6 VR4KBM-7 VR4KBM-8 VR4KBM-9
CALL BUTTON WIRING