Tek-ENTRY Vandal-Resistant TekTips

Testing procedures for the IR104C and IR204B 4-wire apartment stations
Guidelines for Intercom Amplifier Placement
Troubleshooting the IR104B Apartment Station and the PK543 Amplifier
Care and maintenance of AM and CM Series Entrance Panel push button switches
Troubleshooting a two-entrance apartment intercom system
Correcting buzzing in apartment intercom stations
PK124 Battery Charger wiring tip
Current Capability LI404B with +24VDC power source
Troubleshooting intercom systems
More Troubleshooting for Intercom Systems
Common Sense Troubleshooting- Ohming Speakers
PK543 Amplifier Field Test