Projector control (RS-232, LAN, PJLink, 12 V trigger)
A low-voltage output that switches on when the projector powers up, typically to drop a motorised screen or move masking.
- Standard
- De facto
- ISO 21118
- ISO 21118 optional
How to compare it
12 V trigger
An enthusiast and install signal. Some offer aspect-dependent triggers for masking.
PJLink class
Support for the cross-brand projector network control protocol.
Class 2 adds things like status notifications and extended queries.
Standard: PJLink (JBMIA)
Deep cut
PJLink class. PJLink is plain TCP on port 4352 with optional MD5 auth. Rooms with mixed brands rely on it.
Terms on this page
RS-232 / LAN / IP control / 12 V trigger / IR
Home-automation control. Supported ecosystems include PJLink, Crestron, Control4, Savant and AMX. ⚖ control.rs232, control.lan, control.trigger_12v, control.pjlink, control.crestron, control.control4